{"description": {"type": "/type/text", "value": "Introduces the discoveries and inventions of ancient Egypt, including locks, lighthouses, mathematical discoveries, and the writing they used."}, "title": "Discoveries and inventions", "covers": [3727839], "subject_places": ["Egypt"], "subjects": ["Juvenile literature", "Civilization", "Inventions", "History", "Egypt, juvenile literature", "Inventions, juvenile literature", "Discoveries in science", "Egypt, civilization", "Discoveries in science, juvenile literature"], "key": "/works/OL51274W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL19510A"}}], "subject_times": ["To 332 B.C."], "type": {"key": "/type/work"}, "latest_revision": 8, "revision": 8, "created": {"type": "/type/datetime", "value": "2009-10-15T15:17:11.597389"}, "last_modified": {"type": "/type/datetime", "value": "2022-07-19T04:17:46.448717"}}