RAUSCH, D. O. Y OTROS <br/><br/>
UPDATE LEAD-ZINC 

 - 0 
 - NEW YORK-U.S.A.  SOCIETY OF MINING ENG.  1977 
 - 414 pag  23 cm 
 - 0  0 .
<br/><br/>EXPLORATION-EXTRACTIVE 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CIENCIAS PURAS
<br/><br/><label>Dewey Class. No.: </label>549.23  / R26