{"languages": [{"key": "/l/eng"}], "physical_format": "Hardcover", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 20:50:18.033121"}, "publishers": ["Gale Group"], "title": "Gale Encyclopedia of United States History", "id": 15512249, "isbn_13": ["9781414431062"], "isbn_10": ["1414431066"], "publish_date": "December 7, 2007", "key": "/b/OL11755905M", "type": {"key": "/type/edition"}, "subjects": ["Encyclopedias", "Reference", "United States - General", "History", "History: World"], "revision": 1}