{"type": {"key": "/type/work"}, "title": "A Guide Book of United States Coins 15th Ed.", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2762415A"}}], "key": "/works/OL33722331W", "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2023-01-14T06:49:48.276329"}, "last_modified": {"type": "/type/datetime", "value": "2026-08-29T21:04:50.803146"}}