{"languages": [{"key": "/l/eng"}], "physical_format": "Library Binding", "weight": "13.4 ounces", "publishers": ["Child's World"], "number_of_pages": 40, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 20:50:18.033121"}, "id": 16027507, "isbn_13": ["9781567667431"], "isbn_10": ["1567667430"], "publish_date": "July 2000", "key": "/b/OL12168152M", "authors": [{"key": "/a/OL20384A"}], "title": "Matthew Henson and the North Pole Expedition (Journey to Freedom)", "type": {"key": "/type/edition"}, "subjects": ["General", "Biography & Autobiography - Cultural Heritage", "People & Places - United States - African-American", "Juvenile Nonfiction", "Children's 9-12 - Biography / Autobiography", "1866-1955", "African American explorers", "African Americans", "Biography", "Explorers", "Henson, Matthew Alexander,", "Juvenile literature", "Children: Grades 4-6"], "physical_dimensions": "10.6 x 9.3 x 0.4 inches", "revision": 1}