{"title": "Tabellen zur optischer Bestimmung der gesteinsbildenden Minerale", "subjects": ["Determinative Mineralogy", "Mineralogy, Determinative"], "key": "/works/OL6423986W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1698607A"}}], "type": {"key": "/type/work"}, "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2009-12-10T19:08:27.860071"}, "last_modified": {"type": "/type/datetime", "value": "2023-12-30T18:43:13.647625"}}