{"isbn_13": ["9780216933316"], "physical_format": "Hardcover", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "publishers": ["Kluwer Academic Publishers Group"], "number_of_pages": 256, "id": 13151004, "first_sentence": {"type": "/type/text", "value": "The history of concrete in Britain [1, 2, 3] dates back to Roman times, but it was not until the 1930s that concrete was supplied ready-mixed in the UK."}, "isbn_10": ["0216933315"], "publish_date": "September 15, 1992", "key": "/b/OL9801529M", "authors": [{"key": "/a/OL3328651A"}, {"key": "/a/OL2681873A"}], "title": "Manual of Ready Mixed Concrete", "type": {"key": "/type/edition"}, "subjects": ["Building construction & materials"], "revision": 1}