{"publishers": ["Worshipful Company of Gunmakers of London (and)  Guardians of the Birmingham Proof House"], "pagination": "20 p. :", "created": {"type": "/type/datetime", "value": "2008-10-29T20:45:15.340974"}, "number_of_pages": 20, "languages": [{"key": "/l/eng"}], "last_modified": {"type": "/type/datetime", "value": "2008-10-29T20:45:15.340974"}, "publish_date": "1952", "publish_country": "enk", "key": "/b/OL20794057M", "authors": [{"key": "/a/OL5674449A"}], "title": "Notes on the proof of gun barrels.", "publish_places": ["London"], "subjects": ["Firearms -- Identification.", "Rifles."], "type": {"key": "/type/edition"}, "id": 31009375, "revision": 1}