TY  - BOOK
AU  - Evia,Jose Luis
AU  - McMahan,Gary
AU  - Pasco-Ofnt,Alberto
ED  -  World Bank
TI  - An Environmental Study of Artisanal, Small and Medium Mining in Bolivia, Chile and Peru / Gary McMahon (etal...)
CY  - Washington,D.C
KW  - Mineral Industries - Environmental Aspects - olivia
KW  - Natural Resources
ER  -