{"first_publish_date": "1904", "last_modified": {"type": "/type/datetime", "value": "2020-08-11T10:50:54.648327"}, "title": "Report of proceedings of the sixth annual session", "created": {"type": "/type/datetime", "value": "2009-12-09T21:51:25.828346"}, "covers": [5901364], "subject_places": ["United States"], "lc_classifications": ["TN5 .A5 1902"], "latest_revision": 5, "key": "/works/OL1554767W", "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL165721A"}}], "type": {"key": "/type/work"}, "subjects": ["Mines and mineral resources", "Mineral industries", "Congresses"], "revision": 5}