Road models
By: prepared by the Office of Public Roads
Series: Bulletin of the U.S. Department of Agriculture -- no. 220; Bulletin of the U.S. Department of Agriculture -- no. 220.
Publisher: U.S. Dept. of Agriculture
Published: 1915
Place of publication: Washington, D.C
Language: eng
Number of pages: 24
Subjects: Roads; Design and construction
Notes: Caption title.

"June 7, 1915."