{"languages": [{"key": "/l/spa"}], "physical_format": "Paperback", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 20:50:18.033121"}, "publishers": ["Author-Publishers"], "title": "Proyecto y Calculo de Estructuras de Hormigon Armado", "id": 17520241, "isbn_13": ["9788439811084"], "isbn_10": ["843981108X"], "publish_date": "February 1997", "key": "/b/OL13264135M", "authors": [{"key": "/a/OL4231610A"}], "type": {"key": "/type/edition"}, "subjects": ["History - Specific Styles", "Architecture"], "revision": 1}