McMahon, Gary et al. An Environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru. Washington: The World Bank, 1999. ix, 61 s. World Bank technical paper, no. 429.
McMahon, G. (1999). An Environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru. Washington: The World Bank.
Styl ChicagoMcMahon, Gary. An Environmental Study of Artisanal, Small, and Medium Mining in Bolivia, Chile, and Peru. Washington: The World Bank, 1999.
Citace podle MLAMcMahon, Gary. An Environmental Study of Artisanal, Small, and Medium Mining in Bolivia, Chile, and Peru. Washington: The World Bank, 1999.
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