Gear handbook
Dudley Darle,W.
Gear handbook W. Dudley Darle - New York McGraw-Hill 1962 - [various pagings.]
Gears
(035)621.83 / DUD
Gear handbook W. Dudley Darle - New York McGraw-Hill 1962 - [various pagings.]
Gears
(035)621.83 / DUD