Ewert, Richard H. books & textbook
Encyclopedic Dictionary of Gears and Gearing
South, David W. Ewert, Richard H.
McGraw-Hill Professional /1994-08-01 Hardcover / 412 Pages
isbn-10: 0070597960 / isbn-13: 9780070597969
Gears And Gear Manufacture: The Fundamentals
Springer /1996T Hardcover / 324 Pages
isbn-10: 0412106116 / isbn-13: 9780412106118
