{"isbn_13": ["9780849325212"], "physical_format": "Hardcover", "subtitle": "CD-ROM Interactive", "weight": "1.7 pounds", "languages": [{"key": "/l/eng"}], "publishers": ["CRC Press"], "number_of_pages": 411, "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "id": 11181760, "first_sentence": {"type": "/type/text", "value": "An electric drive is an industrial system which performs the conversion of electrical energy to mechanical energy (in motoring) or vice versa (in generator braking) for running various processes such as: production plants, transportation of people or goods, home appliances, pumps, air compressors, computer disc drives, robots, music or image players, etc."}, "isbn_10": ["0849325218"], "publish_date": "November 17, 1998", "key": "/b/OL8259713M", "authors": [{"key": "/a/OL2908175A"}, {"key": "/a/OL2633399A"}], "title": "Electric Drives", "type": {"key": "/type/edition"}, "subjects": ["Electric motors", "Electronic devices & materials", "Technology & Industrial Arts", "Electric Machines", "Technology", "Science/Mathematics", "Engineering - Electrical & Electronic", "Electric driving"], "physical_dimensions": "9.4 x 6.3 x 0.8 inches", "revision": 1}