{"title": "An Economic Theory of Cities", "covers": [2223563], "key": "/works/OL499898W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL33200A"}}], "type": {"key": "/type/work"}, "subjects": ["Urban economics", "Space in economics"], "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2009-12-08T03:46:53.518632"}, "last_modified": {"type": "/type/datetime", "value": "2020-12-03T18:20:27.028264"}}