HEYL, Allen V. <br/><br/>
Oxidized Zinc deposits of the United States / 
by Allen V. Heyl and C. N. Bozion. 
 -- Madrid :   United States Government Printing Office,   1962-1964 
 - 3v. -- 
 (Geological Survey Bulletin  ; 1135).
<br/><br/>Contiene : Vol. I. General Geology. -- (A). -- Vol. II. Utah. -- (B). -- Vol. III. Colorado. -- (C) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estados Unidos<br/>Yacimientos de Zinc
<br/><br/><label>Universal Decimal Class. No.: </label>553.44(73)