{"title": "Fortschritt, was ist das--?", "subjects": ["Music", "Philosophy and aesthetics", "Historiography", "History and criticism", "Progress", "History"], "key": "/works/OL23336791W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1558990A"}}], "type": {"key": "/type/work"}, "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2020-11-14T09:54:04.878260"}, "last_modified": {"type": "/type/datetime", "value": "2025-05-15T05:46:39.354163"}}