{"title": "100 Words Math Workbook", "covers": [1229485], "key": "/works/OL5963411W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1480065A"}}], "type": {"key": "/type/work"}, "subjects": ["Mathematics, study and teaching (elementary)"], "latest_revision": 5, "revision": 5, "created": {"type": "/type/datetime", "value": "2009-12-10T18:15:50.456894"}, "last_modified": {"type": "/type/datetime", "value": "2022-12-17T16:38:41.251379"}}