{"lc_classifications": ["QA103 .W2"], "title": "New primary arithmetic", "covers": [5663954], "first_publish_date": "1903", "key": "/works/OL240746W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2533926A"}}], "type": {"key": "/type/work"}, "subjects": ["Arithmetic"], "latest_revision": 5, "revision": 5, "created": {"type": "/type/datetime", "value": "2009-10-23T12:35:14.797270"}, "last_modified": {"type": "/type/datetime", "value": "2025-05-04T03:58:49.731257"}}