Berryhill, Henry L.  1921-2013 <br/><br/>
Geology of the Ciales quadrangle Puerto Rico / 
by Henry L. Berryhill. 
 -- Washington :   United States Government Printing Office,   1965 
 - 116 p. + map. -- 
 (Geological Survey Bulletin  ; 1184).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología<br/>Puerto Rico
<br/><br/><label>Universal Decimal Class. No.: </label>55(729.5)