{"isbn_13": ["9780471394938"], "last_modified": {"type": "/type/datetime", "value": "2008-04-29 13:35:46.87638"}, "languages": [{"key": "/l/eng"}], "publishers": ["Wiley-Liss"], "number_of_pages": 472, "first_sentence": {"type": "/type/text", "value": "The composition of matter has puzzled philosophers for centuries and scientists for decades."}, "isbn_10": ["0471394939"], "publish_date": "September 13, 2004", "key": "/b/OL7616515M", "authors": [{"key": "/a/OL531386A"}, {"key": "/a/OL2738767A"}, {"key": "/a/OL2738768A"}], "title": "Radiation Therapy Physics", "type": {"key": "/type/edition"}, "id": 10367226, "revision": 1}