A-gi’ictiltTiiiil- Library 
Bulletin 264 October, 1920 
The Agricultural Experiment Station 
OF THE 
Colorado Agricultural College 
PERENNIAL PEPPERGRASS 
A NOXIOUS WEED IN COLORADO 
BY 
A. K. PEITERSEN and R. T. BURDICK 
I 
PUBLISHED BY THE EXPERIMENT STATION 
FORT COLLINS, COLORADO 
1920 
