{"isbn_13": ["9780471352891"], "last_modified": {"type": "/type/datetime", "value": "2008-04-29 13:35:46.87638"}, "languages": [{"key": "/l/eng"}], "publishers": ["Wiley-Interscience"], "number_of_pages": 448, "first_sentence": {"type": "/type/text", "value": "Conventional mobile radio for decades relied simply on all-stations broadcast calls, followed by either a general message or a voice page to a particular user."}, "isbn_10": ["0471352896"], "publish_date": "November 10, 1999", "key": "/b/OL7615600M", "authors": [{"key": "/a/OL588762A"}], "title": "The Trunked Radio and Enhanced PMR Radio Handbook", "type": {"key": "/type/edition"}, "id": 10365641, "revision": 1}