{"title": "Extra Practice for Primary Math U.S. Edition 4", "created": {"type": "/type/datetime", "value": "2009-12-11T02:34:49.537594"}, "last_modified": {"type": "/type/datetime", "value": "2009-12-11T02:34:49.537594"}, "latest_revision": 1, "key": "/works/OL10243166W", "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL4202846A"}}], "type": {"key": "/type/work"}, "revision": 1}