70268629
9781018082066
Colvin, Fred Herbert is the author of 'Machine-Shop Arithmetic : Shows How All Shop Problems Are Worked Out and Why. Includes Change Gears for Cutting Any Threads; Drills, Taps, Shink and Force Fits; Metric System of Measurements and Threads. Used by All Classes of Mechanics, Apprentices, Etc', published 2022 under ISBN 9781018082066 and ISBN 1018082069.
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