{"languages": [{"key": "/l/eng"}], "physical_format": "Paperback", "weight": "4.8 ounces", "publishers": ["Childrens Pr"], "number_of_pages": 48, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "id": 13130914, "isbn_13": ["9780516416984"], "isbn_10": ["0516416987"], "publish_date": "September 1983", "key": "/b/OL9785396M", "authors": [{"key": "/a/OL216198A"}], "title": "Mountains (New True Books: Ecosystems (Paperback))", "type": {"key": "/type/edition"}, "subjects": ["Science & Technology - Environmental Science & Ecology", "Children's 4-8 - Science", "Children: Grades 4-6"], "physical_dimensions": "8.5 x 7.5 x 0.2 inches", "revision": 1}