{"created": {"type": "/type/datetime", "value": "2019-02-06T16:32:06.601488"}, "subject_places": ["United States"], "subjects": ["Prospecting", "Petroleum", "History"], "latest_revision": 1, "key": "/works/OL18420171W", "title": "Areas of historical oil and gas exploration and production in the conterminous United States", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL148115A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2019-02-06T16:32:06.601488"}, "revision": 1}