{"lc_classifications": ["GB705.M8 W37 no. 29", "GB1025.M8 W37 no. 29"], "key": "/works/OL1570466W", "title": "Springs of Missouri", "subject_places": ["Missouri"], "first_publish_date": "1974", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL168899A"}}], "dewey_number": ["553/.7/09778 s", "551.4/98"], "type": {"key": "/type/work"}, "subjects": ["Natural history", "Springs", "Hot spring ecology"], "covers": [15068247], "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2009-12-09T21:53:47.628955"}, "last_modified": {"type": "/type/datetime", "value": "2025-05-12T23:17:13.814043"}}