{"created": {"type": "/type/datetime", "value": "2009-12-10T08:24:57.599691"}, "title": "Select list of references on the conservation of natural resources in the United States", "covers": [6031531], "subject_places": ["United States"], "last_modified": {"type": "/type/datetime", "value": "2010-12-03T19:26:05.384471"}, "latest_revision": 3, "key": "/works/OL5038700W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1097788A"}}], "type": {"key": "/type/work"}, "subjects": ["Bibliography", "Economic conditions", "Natural resources"], "revision": 3}