{"physical_format": "Paperback", "subtitle": "Journey to an Uncertain Destination (Population Bulletin V. 49, No. 2)", "weight": "3.2 ounces", "publishers": ["Population Reference Bureau"], "title": "Immigration to the United States", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "isbn_13": ["9789995530808"], "isbn_10": ["9995530805"], "publish_date": "June 1994", "key": "/b/OL9850294M", "authors": [{"key": "/a/OL2839895A"}], "type": {"key": "/type/edition"}, "id": 13206206, "physical_dimensions": "9.5 x 7.2 x 0.2 inches", "revision": 1}