{"first_sentence": {"type": "/type/text", "value": "Induction generators were used from the beginning of the 20th century until they were abandoned and almost disappeared in the 1960s."}, "physical_format": "Hardcover", "subtitle": "Design and Analysis with Induction Generators", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "weight": "1.6 pounds", "languages": [{"key": "/l/eng"}], "publishers": ["CRC"], "number_of_pages": 408, "isbn_13": ["9780849320316"], "id": 11181778, "edition_name": "1 edition", "isbn_10": ["0849320313"], "publish_date": "May 19, 2004", "key": "/b/OL8259459M", "authors": [{"key": "/a/OL2908755A"}, {"key": "/a/OL2908756A"}], "title": "Renewable Energy Systems", "type": {"key": "/type/edition"}, "subjects": ["Electrical engineering", "Renewable energy sources", "Engineering - Electrical & Electronic", "Mathematics", "Technology & Industrial Arts", "Science/Mathematics", "Electricity", "Engineering - Mechanical", "Technology / Engineering / Electrical", "Applied", "Electric machinery, Induction"], "physical_dimensions": "9.8 x 6.2 x 1.1 inches", "revision": 1}