{"languages": [{"key": "/l/eng"}], "physical_format": "Audio Cassette", "weight": "1.6 ounces", "publishers": ["Houghton Mifflin"], "type": {"key": "/type/edition"}, "title": "The Polar Express", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "id": 12730606, "isbn_13": ["9780395492819"], "isbn_10": ["0395492815"], "publish_date": "October 30, 1989", "key": "/b/OL9448887M", "authors": [{"key": "/a/OL657204A"}], "contributions": ["William Hurt (Narrator)"], "subjects": ["Christmas books", "Fiction", "Classics", "Holidays & Festivals - Christmas", "Juvenile Fiction / Holidays & Festivals / Christmas", "Holidays & Celebrations - Christmas & Advent", "Juvenile Fiction", "Children's Audio - 9-12", "Audio: Juvenile"], "physical_dimensions": "4.5 x 2.8 x 0.8 inches", "revision": 1}