Madrigal 

 - Lima  Editora Perú  1980 
 - pp. 353-361 
 -  t.4, v.1 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>COBRE<br/>GEOLOGIA ECONOMICA<br/>YACIMIENTOS MINERALES
<br/><br/><label>Subjects--Geographic Terms: </label><br/>AREQUIPA
<br/><br/><label>Subjects--Index Terms: </label>MADRIGAL, MINA 
<br/><br/><label>Universal Decimal Class. No.: </label>P/622(85)/S19|25