{"title": "Ploughing Engines in Focus", "key": "/works/OL3946547W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL719703A"}}], "type": {"key": "/type/work"}, "subjects": ["Traction-engines", "History", "Agricultural machinery"], "covers": [12658785], "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2009-12-10T04:55:26.408229"}, "last_modified": {"type": "/type/datetime", "value": "2022-03-09T06:32:39.790595"}}