{"covers": [4595098], "key": "/works/OL595959W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL43208A"}}], "title": "National park concession management", "subject_places": ["United States"], "subjects": ["Management", "National park concessions", "United States", "United States. National Park Service", "National parks and reserves", "Environmental law, united states", "United states, congress, senate", "Concessions"], "type": {"key": "/type/work"}, "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-08T06:01:17.721494"}, "last_modified": {"type": "/type/datetime", "value": "2024-01-31T03:27:02.280199"}}