{"physical_format": "Paperback", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 20:50:18.033121"}, "publishers": ["Springer Verlag"], "number_of_pages": 124, "id": 16841668, "isbn_13": ["9783540560821"], "isbn_10": ["3540560823"], "publish_date": "December 1992", "key": "/b/OL12776609M", "title": "Kontrastmittel", "type": {"key": "/type/edition"}, "subjects": ["Science/Mathematics"], "revision": 1}