{"first_publish_date": "1928", "last_modified": {"type": "/type/datetime", "value": "2012-05-18T22:21:15.326510"}, "title": "Conditions in the coal fields of Pennsylvania, West Virginia, and Ohio", "created": {"type": "/type/datetime", "value": "2009-10-18T17:41:24.012151"}, "subject_places": ["Pennsylvania", "Ohio", "West Virginia"], "lc_classifications": ["KF26 .I58 1928"], "latest_revision": 3, "key": "/works/OL126163W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL4767185A"}}], "type": {"key": "/type/work"}, "subjects": ["Coal mines and mining", "Coal miners"], "revision": 3}