Cox, Dennis P. <br/><br/>
Geology of the Tanama and Helecho porphyry copper deposits and vicinity, Puerto Rico / 
by Dennis P. Cox. 
 - Washington:   United States Government Printing Office,   1985.  
 - iv, 59 p. :  ill., maps, tables ;  29 cm.  +1 map. 
 -  1327 .
<br/><br/> One map on folded leaf in pocket.  Conduct map: Geology of the Tanama and Helecho porphyry copper deposits and Vicinity, Puerto Rico. 
<br/><br/>Includes bibliographical references (p. 58-59). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Porphyry--Puerto Rico--Tanama Region<br/>Copper ores--Puerto Rico--Tanama Region
<br/><br/><label>Dewey Class. No.: </label>553.430972953