{"key": "/works/OL2497490W", "created": {"type": "/type/datetime", "value": "2009-12-09T23:48:42.923821"}, "title": "The iron manufacturer's guide to the furnaces, forges and rolling mills of the United States", "id": 37674728, "subject_places": ["United States"], "first_publish_date": "1859", "latest_revision": 2, "last_modified": {"type": "/type/datetime", "value": "2010-02-05T06:07:12.446947"}, "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL350228A"}}], "type": {"key": "/type/work"}, "subjects": ["Iron ores", "Iron industry and trade"], "revision": 2}