{"subtitle": "a supplement to the Manual of instructions for the survey of the public lands of the United States", "title": "Standard field tables and trigonometric formulas", "created": {"type": "/type/datetime", "value": "2009-12-09T07:31:45.879559"}, "id": 36037919, "subject_places": ["United States"], "last_modified": {"type": "/type/datetime", "value": "2010-03-15T23:38:50.276221"}, "latest_revision": 2, "key": "/works/OL923971W", "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL81660A"}}], "type": {"key": "/type/work"}, "subjects": ["Public lands", "Surveying"], "revision": 2}