{"lc_classifications": ["YA 9273"], "key": "/works/OL3426677W", "created": {"type": "/type/datetime", "value": "2009-12-10T03:32:41.528579"}, "title": "Report of the geological survey and condition of the Twin mine, in the county of Guilford, North Carolina", "id": 38602955, "subject_places": ["North Carolina"], "first_publish_date": "1860", "latest_revision": 2, "last_modified": {"type": "/type/datetime", "value": "2010-02-13T23:12:42.583558"}, "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL564802A"}}], "type": {"key": "/type/work"}, "subjects": ["Copper mines and mining"], "revision": 2}