MINERALS YEARBOOK 

 - S.E. 
 - Estados Unidos  UNITED STATES DEPARTMENT OF THE IINTERIOR BUREAU OF MINES  1989 S.L.  BUREAU OF MINES 
 - 1186 
<br/><br/> DONADO POR EL ING NUŅEZ DEL ARCO 
<br/><br/><label>ISBN: </label>0160358205 
<br/><br/><label>LCCN: </label>80094 
<br/><br/><label>Dewey Class. No.: </label>549