Bradford, Bill <br/><br/>
Small Precious Metal Mining Projects 

 -  SEGEMAR  1988 
<br/><br/> Mining Magazine (may), Pags. 406-415 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metales Preciosos<br/>Artsub
<br/><br/><label>Subjects--Index Terms: </label>Mineral/es: Metales Preciosos