{"physical_format": "Hardcover", "weight": "1.1 pounds", "publishers": ["Gerstenberg"], "number_of_pages": 48, "last_modified": {"type": "/type/datetime", "value": "2008-04-30 20:50:18.033121"}, "isbn_13": ["9783806748529"], "isbn_10": ["3806748527"], "publish_date": "August 1, 1999", "key": "/b/OL12932804M", "authors": [{"key": "/a/OL4121955A"}, {"key": "/a/OL3998797A"}], "title": "Sturm auf die Burg. Eine Belagerung im Mittelalter. ( Ab 10 J.).", "type": {"key": "/type/edition"}, "id": 17079518, "physical_dimensions": "11.3 x 8.9 x 0.5 inches", "revision": 1}