{"isbn_13": ["9780940898950"], "physical_format": "Paperback", "subtitle": "Mental Retardation Definition, Classification and System of Supports", "weight": "4.8 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["Amer Assoc on Intellectual & Developmental Di"], "number_of_pages": 72, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 20:50:18.033121"}, "id": 15225911, "edition_name": "1 edition", "isbn_10": ["0940898950"], "publish_date": "January 2006", "key": "/b/OL11539641M", "authors": [{"key": "/a/OL450078A"}], "title": "User's Guide", "type": {"key": "/type/edition"}, "subjects": ["Mental Illness", "Mental Health", "Medical", "Psychology", "Classification", "Mental Retardation"], "physical_dimensions": "10 x 7 x 0.3 inches", "revision": 1}