Date of Version
January 1939
Recommended Citation
Witt, Ralph, "Stabilizing Gravel and Stone Roads with Tar" (1939). Purdue Road School. 16.
https://docs.lib.purdue.edu/roadschool/1939/proceedings/16
Start Date
1-25-1939 12:00 AM
COinS
Jan 25th, 12:00 AM
Stabilizing Gravel and Stone Roads with Tar
