{"languages": [{"key": "/l/eng"}], "physical_format": "Paperback", "subtitle": "Numbers and Operations", "weight": "1.3 pounds", "publishers": ["Dale Seymour Publications"], "number_of_pages": 151, "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "id": 10933524, "isbn_13": ["9780769001692"], "isbn_10": ["0769001696"], "publish_date": "December 30, 2000", "key": "/b/OL8066575M", "authors": [{"key": "/a/OL2853532A"}], "title": "Building A System Of Tens: Casebook", "type": {"key": "/type/edition"}, "subjects": ["Teaching Methods & Materials - Mathematics", "Education"], "physical_dimensions": "9.7 x 7.8 x 0.5 inches", "revision": 1}