Pillmore, C. L.  1930- <br/><br/>
Geology of the Nefsy divide quadrangle crook county, Wyoming / 
by C. L. Pillmore and W. J. Mapel. 
 -- Washington :   United States Government Printing Office,   1963 
 - 52 p. + map. -- 
 (Geological Survey Bulletin  ;  1121-E).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología<br/>Wyoming
<br/><br/><label>Universal Decimal Class. No.: </label>55(787)