Standard and tentative methods of sampling and testing highway materials
Subtitle: recommended by the Second Conference of State Highway Testing Engineers and Chemists, Washington, D.C., Feb. 23-27, 1920
Contributors: Second Conference of State Highway Testing Engineers and Chemists (1920 : Washington, D.C.)
Series: Bulletin / United States Department of Agriculture -- no. 949; Bulletin of the U.S. Department of Agriculture -- no. 949.
Publisher: U.S. Dept. of Agriculture
Published: 1921
Place of publication: Washington, D.C
Language: eng
Number of pages: 98
Subjects: Road materials; Testing
Notes: Caption title.

"October 10, 1921."

Includes index.

"Contribution from the Bureau of Public Roads."