KEEFER, W. R. <br/><br/>
Geology of the Shotgun butte area Fremont county, Wyoming / 
by W. R. Keefer and M. L. Troyer. 
 -- Washington :   United States Government Printing Office,   1964 
 - 123 p. + map. -- 
 (Geological Survey Bulletin  ; 1157).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología<br/>Wyoming
<br/><br/><label>Universal Decimal Class. No.: </label>55(787)