{"languages": [{"key": "/l/eng"}], "physical_format": "Paperback", "subtitle": "Arabic Edition", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "publishers": ["John Wiley & Sons Inc"], "title": "Introduction to Communication Systems", "isbn_13": ["9780471825296"], "isbn_10": ["0471825298"], "publish_date": "May 2000", "key": "/b/OL10337288M", "type": {"key": "/type/edition"}, "id": 13781570, "revision": 1}