1993 - Elmer Sperry Inventor and Engineer [Johns Hopkins Studies in the History of Technology] (Paperback) ISBN-13: 9780801847561 ISBN-10: 0801847567 Genres: Biographies & Memoirs, Science & Math ? Changing Attitudes Toward American Technology (Paperback) ISBN-13: 9780060429836 ISBN-10: 0060429836 ? |