{"first_publish_date": "1957", "last_modified": {"type": "/type/datetime", "value": "2012-05-15T14:47:14.877548"}, "title": "150 years of service, 1807-1957", "created": {"type": "/type/datetime", "value": "2009-12-09T21:50:37.978343"}, "covers": [7120440], "lc_classifications": ["QB296 .U847 1957"], "latest_revision": 4, "key": "/works/OL1549067W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL164810A"}}], "dewey_number": ["526.06173"], "type": {"key": "/type/work"}, "subjects": ["U.S. Coast and Geodetic Survey"], "revision": 4}