{"languages": [{"key": "/l/eng"}], "physical_format": "Paperback", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "publishers": ["Dalesman Publishing Co Ltd"], "number_of_pages": 144, "id": 11209596, "isbn_13": ["9780852062593"], "isbn_10": ["0852062591"], "publish_date": "January 1975", "key": "/b/OL8280426M", "authors": [{"key": "/a/OL1017077A"}], "title": "Northern Caves (A Dalesman caving book)", "type": {"key": "/type/edition"}, "subjects": ["Caves", "England", "Guidebooks"], "revision": 1}