{"isbn_13": ["9780531166840"], "physical_format": "Paperback", "weight": "9.6 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["Franklin Watts"], "number_of_pages": 79, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "id": 12783622, "first_sentence": {"type": "/type/text", "value": "On August 20, 1857, at the height of the California gold rush, about 475 passengers bound for New York boarded the steamship SS Sonora in San Francisco."}, "isbn_10": ["0531166848"], "publish_date": "September 2003", "key": "/b/OL9492127M", "authors": [{"key": "/a/OL231277A"}], "title": "Underwater Exploration (The Restless Sea)", "type": {"key": "/type/edition"}, "subjects": ["Science & Nature - Earth Sciences", "Science & Nature - Earth Sciences - Water (Oceans, Lakes, Et", "General", "Juvenile Nonfiction", "Children's Books/Ages 9-12 Science", "Juvenile literature", "Underwater exploration", "Children: Grades 4-6"], "revision": 1}