{"type": {"key": "/type/work"}, "title": "Arbeit und Industrie in Kassel", "subjects": ["Industries", "History", "Labor", "Social structure", "Labor market", "Economic conditions"], "subject_places": ["Germany", "Kassel", "Kassel (Germany)"], "subject_times": ["20th century"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL13000833A"}, "role": "author."}], "key": "/works/OL45100014W", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2026-04-05T08:53:15.872883"}, "last_modified": {"type": "/type/datetime", "value": "2026-04-05T08:53:15.872883"}}