{"type": {"key": "/type/work"}, "title": "An historical sketch of oil and gas conservation in Alberta", "subjects": ["Natural gas", "Conservation", "History", "Oil fields"], "subject_places": ["Alberta"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL9405091A"}}], "covers": [11880024], "key": "/works/OL24955701W", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2021-09-01T16:16:28.075490"}, "last_modified": {"type": "/type/datetime", "value": "2021-09-01T16:16:28.075490"}}