THE BURROW-BUILDER AND ITS USE 
FOR CONTROL OF POCKET GOPHERS 
LIBRARY WIL 
: WILDLIFE p ( 
meee ESEA 
pe ae - ean SERVinn Sabb 
- 16, FEDERAL ¢ | 
DENVER, COLORADO Eee 
SPECIAL SCIENTIFIC REPORT: WILDLIFE No. 47 ‘hag. 

UNITED STATES DEPARTMENT OF THE INFERIOR 
FISH AND WILDLIFE SERNMICE 
