(032329) Townsend, Dennis P, editor. Dudley's Gear Handbook. New York: McGraw-Hill, 1992. 2nd Edition. Hardcover. Thick 8vo. Very Good+ in Fine DJ. B&W Illustrations. Some discoloration to covers from binder's glue. The Design, Manufacture, And Application Of Gears ISBN: 0070179034 (Gearing)