TY - BOOK AU - Davenport, William W. CN - TL540.S687 D38 CN - TL540.S687 CY - New York : DA - c1978. ID - 38238 KW - Aeronautics N1 - Includes index. PB - Scribner, PP - New York : PY - c1978. SN - 0684157934 : T1 - Gyro! :The life and times of Lawrence Sperry / TI - Gyro! :The life and times of Lawrence Sperry / ER -