Substitutes for wooden breakpins
By: A.H. Hoffman and E.G. McKibben
Contributors: McKibben, Eugene G. (Eugene George), b. 1895
Series: Bulletin -- no. 482; Bulletin (California Agricultural Experiment Station) -- 482.
Publisher: Agricultural Experiment Station
Published: 1929
Place of publication: Berkeley, Cal
Language: eng
Number of pages: 22
Subjects: Farm tractors; Pins (Engineering)
Notes: Cover title.