{"subjects": ["Inclined planes", "Wedges", "Simple machines", "Juvenile literature", "Machinery", "Machinery, juvenile literature"], "key": "/works/OL42103W", "title": "Ramps and Wedges (Machines in Action)", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL30877A"}}], "type": {"key": "/type/work"}, "covers": [1929450], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-10-15T08:28:04.677953"}, "last_modified": {"type": "/type/datetime", "value": "2022-07-18T21:44:32.653607"}}