Cost of operating rural-mail-carrier motor vehicles on pavement, gravel, and earth
By: by R. A. Moyer and Robley Winfrey.
Contributors: Winfrey, Robley, 1899- joint author.
Series: Bulletin 143, Iowa Engineering Experiment Station
Publisher: Iowa State College of Agriculture and Mechanic Arts
Published: 1939
Place of publication: Ames, Ia
Language: eng
Number of pages: 56
Subjects: Automobiles.; Roads.; Postal service -- United States -- Letter carriers.
Notes: The Iowa State College bulletin, vol. xxxviii, no. 8. July 26, 1939.