{"isbn_13": ["9780130959416"], "physical_format": "Paperback", "subtitle": "An Introduction (4th Edition)", "weight": "14.7 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["Prentice Hall"], "number_of_pages": 337, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "id": 12540208, "edition_name": "4 edition", "isbn_10": ["0130959413"], "publish_date": "September 25, 2001", "key": "/b/OL9288955M", "authors": [{"key": "/a/OL1073767A"}], "title": "Twentieth Century Music", "type": {"key": "/type/edition"}, "subjects": ["20th century music", "Music", "Music/Songbooks", "Textbooks", "History & Criticism - General", "Music / General", "History and criticism", "20th century"], "physical_dimensions": "9.1 x 5.5 x 0.4 inches", "revision": 1}