Downhill speeds of trucks on mountain grades
By: Prepared by the Arizona Highway Dept., Div. of Economics and Statistics in cooperation with U. S. Department of Commerce, Bureau of Public Roads
Contributors: United States. Bureau of Public Roads
Publisher: Highway Department
Published: 1950
Place of publication: Phoenix]
Language: eng
Number of pages: 41
Subjects: Roads
Notes: Reproduced from tupewritten copy.

Cover title.