 Brief02vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint-Pétersbourg, 15 août 1766)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 15 August 1766)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 15. August 1766)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1766-08-15",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief03vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 21 novembre 1766)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 21 novembre 1766)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 21. November 1766)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1766-11-21",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief04vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 25 Decembre 1766)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 25 décembre 1766)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 25. Dezember 1766)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1766-12-25",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief05vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 2 janvier 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 2 January 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 2. Januar 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-01-02",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief06vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 7 février 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 7 February 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 7. Februar 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-02-07",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief07vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 1 Mars 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 1 March 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 1. März 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-03-01",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief08vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, Avril 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, Avril 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, April 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-04",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief09vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 16 avril 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 16 April 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 16. April 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-04-16",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief10vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 20 avril 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 20 April 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 20. April 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-04-20",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief11vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 20 avril 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 20 April 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 20. April 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-04-20",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr ru la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief12vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 1 juin 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 1 June 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 1. Juni 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-06-01",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief13vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr de",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief14vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 14 août 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 14 August 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 14. August 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-08-14",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief15vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 21 août 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 21 August 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 21. August 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-08-21",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief16vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 31 août 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 31 August 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 31. August 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-08-31",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief17vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 7 septembre 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 7 septembre 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 7. September 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-09-07",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief18vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 21 octobre 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 21 October 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 12. October 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-10-12",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief19vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 2 novembre 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 2 novembre 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 2. November 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-11-02",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief20vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 3 décembre 1767)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 3 Decembre 1767)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 3. Dezember 1767)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1767-12-03",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief21vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 28 janvier 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 28 January 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 28. Januar 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-01-28",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief22vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 22 février 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 22 February 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 22. Februar 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-02-22",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief23vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 14 mars 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 14 March 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 14. März 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-03-14",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief24vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 7 avril 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 7 April 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 7. April 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-04-07",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief25vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 16 avril 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 16 April 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 16. April 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-04-16",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief26vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 24 mars 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 24 March 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 24. März 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-05-27",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr de la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief27vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 27 mai 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 27 May 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 27. Mai 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-05-27",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief28vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 3 juin 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 3 June 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 3. Juni 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-06-03",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief29vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 20 juin 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 20 June 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 20. Juni 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-06-20",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief30vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 24 June 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 24 Juin 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 24. Juni 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-06-24",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief31vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 18 July 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 18 Juillet 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 18. Juli 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-07-18",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief32vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 12 août 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 12 August 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 12. August 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-08-12",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief33vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 1 septembre 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 1 September 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 1. September 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-09-01",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief34vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 30 septembre 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 30 September 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 30. September 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-09-30",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief35vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 18 novembre 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 18 novembre 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 18. November 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-11-18",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief36vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 5 Décembre 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 5 December 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 5. Dezember 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-12-05",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief37vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 12 décembre 1768)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 12 December 1768)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 12. Dezember 1768)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1768-12-12",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief38vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 13 janvier 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 13 January 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 13. Januar 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-01-13",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief39vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 27 février 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 27 February 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 27. Februar 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-02-27",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief40vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 24 mars 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 24 March 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 24. März 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-03-24",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief41vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 31 mars 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 31 March 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 31. März 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-03-31",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief42vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 31 mars 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 31 March 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 31. März 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-03-31",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief43vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 28 avril 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 28 April 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 28 April 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-04-28",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief44vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 28 avril 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 28 April 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 28. April 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-04-28",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief45vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 1 Mai 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 1 May 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 1 Mai 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-05-01",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief46vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 15 mai 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 15 May 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 15. Mai 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-05-15",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief47vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 15 mai 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 15 May 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 15. Mai 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-05-15",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief48vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 23 juin 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 23 June 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht, 23. Juni 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-06-23",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief49vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 23 juin 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 23 June 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 23 Juni 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-06-23",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr de la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                 Brief50vonJAEuleranJHSFormey = {
                "status": "published",
                    "metas": [
                        {
                          "value": "Lettre de Jean Albert Euler à Jean Henri Samuel Formey (Saint Pétersbourg, 3 Juillet 1769)",
                          "lang": "fr",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Letter from John Albert Euler to Jean Henri Samuel Formey (Saint Petersburg, 3 July 1769)",
                          "lang": "en",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "Brief von Johann Albrecht Euler an Jean Henri Samuel Formey (Sankt Petersburg, 3. Juli 1769)",
                          "lang": "de",
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#title"
                        },
                        {
                          "value": "1769-07-03",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#created"
                        },
                        {
                          "value": "CC-BY-NC-ND-4.0",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://nakala.fr/terms#license"
                        },
                        {
                          "value": "correspondance",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#anyURI",
                          "propertyUri": "http://nakala.fr/terms#type"
                        },
                        {
                          "value": "Culture francophone",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/subject"
                        },
                        {
                          "value": "Laurent Romary\r\nAnne Baillot\r\nFloriane Chiffoleau",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/contributor"
                        },
                        {
                          "value": "fr la",
                          "lang": null,
                          "typeUri": "http://www.w3.org/2001/XMLSchema#string",
                          "propertyUri": "http://purl.org/dc/terms/language"
                        },
                        {
                          "value": "Reuse subject to prior approval by Staatsbibliothek Berlin",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/accessRights"
                        },
                        {
                          "value": "Berlin State Library",
                          "lang": null,
                          "typeUri": null,
                          "propertyUri": "http://purl.org/dc/terms/rightsHolder"
                        },
                        {
                          "value": {
 "givenname": "Johann Albrecht",
"surname": "Euler",
"orcid": null,
"authorId": "4d69045f-3cf9-4a3e-a72a-8509fc140787"
                          },
                          "propertyUri": "http://nakala.fr/terms#creator"
                        }
                      ],
                      "files": [
                        {
                          "sha1": "string"
                        }
                      ],
                      "collectionsIds": [
                        "10.34847/nkl.e9f2422o",
                        "10.34847/nkl.8479g2z4"
                      ],
                      "rights": [
                        {
                          "id": "fd5b8766-d997-11eb-99d1-5254000a365d",
                          "role": "ROLE_ADMIN"
                        }
                      ]
                    }
                