Krushensky, Richard D. <br/><br/>
Geology of the Istarú Quadrangle, Costa Rica / 
By Richard D. Krushensky. 
 -- Washington :   United States Government Printing Office,   1972 
 - 46 p. + plan. pleg. -- 
 (Geological Survey Bulletin  ; 1358).
<br/><br/> Fecha real de registro 03-09-1974 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología - Istarú (Costa rica)
<br/><br/><label>Universal Decimal Class. No.: </label>55(728.6)