{"isbn_13": ["9780028574301"], "physical_format": "Hardcover", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "languages": [{"key": "/l/eng"}], "type": {"key": "/type/edition"}, "publishers": ["Macmillan Pub Co"], "title": "Tredgold's Mental Retardation", "edition_name": "12 edition", "isbn_10": ["0028574303"], "publish_date": "September 1979", "key": "/b/OL9533223M", "authors": [{"key": "/a/OL3279798A"}], "contributions": ["Michael Craft (Editor)"], "id": 12834317, "revision": 1}