Date of Version
January 1929
Recommended Citation
Purdue Road School, "Publications of the Engineering Extension Department" (1929). Purdue Road School. 24.
https://docs.lib.purdue.edu/roadschool/1929/proceedings/24
Start Date
1-21-1929 12:00 AM
COinS
Jan 21st, 12:00 AM
Publications of the Engineering Extension Department