Spinning tops and gyroscopic motions / by John Perry. Spinning tops Perry, John, 1850-1920. Tops. Gyroscopes. Gyro compass. QA862 531.34 21 PES "An unabridged and unaltered republication of the last edition of the work originally published under the title, Spinning tops." New York : Dover Publications, 1957. 1957. 1957 Text 102 p. : eng