Improving subgrade support values with longitudinal drains /
by Vernon J. Marks.

APA Citation

Marks, V. J., Iowa. Highway Division. Office of Materials. (1984). Improving subgrade support values with longitudinal drains. Ames, Iowa: Office of Materials, Highway Division, Iowa Department of Transportation.

MLA Citation

Marks, Vernon J, and Iowa. Highway Division. Office of Materials. Improving Subgrade Support Values With Longitudinal Drains. Ames, Iowa: Office of Materials, Highway Division, Iowa Department of Transportation, 1984.