The Results of physical tests of road-building rock from 1916 to 1921, inclusive
By: prepared in the Bureau of Public Roads
Series: Department bulletin / United States Department of Agriculture -- no. 1132; Department bulletin (United States. Dept. of Agriculture) -- no. 1132.
Publisher: U.S. Dept. of Agriculture
Published: 1923
Place of publication: Washington, D.C
Language: eng
Number of pages: 52
Subjects: Rocks; Testing; Road materials
Notes: Caption title.

"March 21, 1923."

"Professional paper."

Chiefly tables.