TY  - BOOK
AU  -  Hopper,Richard M.
ED  -  The Wildlife Management Institute
TI  -  Experimental duck hunting seasons, San Luis valley, Colorado, 1963 - 1970  / 
U1  -  AF P 799.244 E87 
PY  - 1975///
CY  -  Washington : 
PB  -  The Wildlife Society, 
KW  -  Duck shooting
KW  -  San Luis Valley (Colo. and N. M.)
N1  -  This study is cooperatively sponsorede by the state of Colorado depa rtment of natural resources division of wildlife and the U.S. fish and wildlife service;  Includes bibliographical references
ER  -