Date of Version
January 1939
Recommended Citation
Purdue Road School, "Publications of the Engineering Extension Department" (1939). Purdue Road School. 33.
https://docs.lib.purdue.edu/roadschool/1939/proceedings/33
Start Date
1-23-1939 12:00 AM
COinS
Jan 23rd, 12:00 AM
Publications of the Engineering Extension Department