Period Instance
GET /api/periods/8/
http://dig-ed-cat.acdh.oeaw.ac.at/api/periods/8/", "name": "Long Nineteenth Century", "start_date": null, "end_date": null, "periodO_id": "" }{ "url": "
GET /api/periods/8/
http://dig-ed-cat.acdh.oeaw.ac.at/api/periods/8/", "name": "Long Nineteenth Century", "start_date": null, "end_date": null, "periodO_id": "" }{ "url": "