{"isbn_13": ["9780071430371"], "last_modified": {"type": "/type/datetime", "value": "2008-04-29 13:35:46.87638"}, "languages": [{"key": "/l/eng"}], "publishers": ["McGraw-Hill Professional"], "number_of_pages": 189, "first_sentence": {"type": "/type/text", "value": "Torsional vibration involves angular oscillations of the rotors of a machine."}, "isbn_10": ["0071430377"], "publish_date": "October 31, 2003", "key": "/b/OL7300298M", "authors": [{"key": "/a/OL2637138A"}], "title": "Torsional Vibration of Turbo-Machinery", "type": {"key": "/type/edition"}, "id": 9949733, "revision": 1}