{"subtitle": "Magnetic declination in the United States for January 1, 1920", "title": "Terrestrial magnetism", "created": {"type": "/type/datetime", "value": "2009-12-10T19:19:52.699699"}, "id": 41711343, "subject_places": ["United States"], "last_modified": {"type": "/type/datetime", "value": "2010-03-16T14:26:15.604685"}, "latest_revision": 2, "key": "/works/OL6538050W", "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL1747108A"}}], "type": {"key": "/type/work"}, "subjects": ["Geomagnetism"], "revision": 2}