{"created": {"type": "/type/datetime", "value": "2009-10-28T03:27:45.935273"}, "subjects": ["United States", "Artillery", "Field and mountain Artillery", "Drill and tactics", "United States. Army"], "latest_revision": 3, "key": "/works/OL416256W", "title": "Provisional drill regulations for field artillery (4.7-inch gun) United States Army. 1917", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL18429A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2011-12-19T11:52:29.596608"}, "covers": [5559859], "revision": 3}