{"last_modified": {"type": "/type/datetime", "value": "2010-12-05T21:41:53.988952"}, "title": "Mathematics for elementary teachers", "created": {"type": "/type/datetime", "value": "2009-12-10T19:22:51.207448"}, "subjects": ["Arithmetic", "Foundations"], "latest_revision": 2, "key": "/works/OL6567485W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1760658A"}}], "type": {"key": "/type/work"}, "revision": 2}