{"created": {"type": "/type/datetime", "value": "2009-12-09T00:10:58.192393"}, "subject_places": ["United States"], "subjects": ["Historic sites", "Management", "National parks and reserves"], "latest_revision": 2, "key": "/works/OL648902W", "title": "Administrative policies for historical areas of the national park system [Rev. 1973)", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL50352A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2010-12-05T10:09:58.065102"}, "revision": 2}