{"last_modified": {"type": "/type/datetime", "value": "2010-12-04T03:10:48.996849"}, "title": "Teaching the essentials of arithmetic", "created": {"type": "/type/datetime", "value": "2009-10-27T23:48:34.122772"}, "subjects": ["Arithmetic", "Study and teaching"], "latest_revision": 2, "key": "/works/OL403449W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL17300A"}}], "type": {"key": "/type/work"}, "revision": 2}