{"covers": [5640674], "first_publish_date": "1922", "latest_revision": 6, "key": "/works/OL250514W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL6830417A"}}], "subjects": ["Petroleum industry and trade"], "created": {"type": "/type/datetime", "value": "2009-10-23T19:12:38.363481"}, "title": "A handbook of the petroleum industry", "last_modified": {"type": "/type/datetime", "value": "2011-12-17T08:36:13.842863"}, "type": {"key": "/type/work"}, "revision": 6}