Evia,Jose Luis McMahan,Gary Pasco-Ofnt,Alberto <br/><br/>
An Environmental Study of Artisanal, Small and Medium Mining in Bolivia, Chile and Peru / Gary McMahon (etal...) 

 - Washington,D.C  World Bank  1999 
 - ix, 61p. 
 - World Bank Technical Paper .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineral Industries - Environmental Aspects - olivia<br/>Natural Resources