{"lc_classifications": ["TN263 .K32"], "key": "/works/OL13845636W", "title": "The ore deposits of the United States and Canada", "first_publish_date": "1900", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL165597A"}}], "type": {"key": "/type/work"}, "subjects": ["Ores", "Ore deposits"], "covers": [6349073], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-11T10:49:37.705515"}, "last_modified": {"type": "/type/datetime", "value": "2024-11-05T00:36:34.340411"}}