首页|Coexistence between conventional alluvial mining and artisanal mining to deal with problems associated with informality in the lower Nechí River Basin-Colombia
Coexistence between conventional alluvial mining and artisanal mining to deal with problems associated with informality in the lower Nechí River Basin-Colombia
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原文链接
NSTL
Elsevier
Tarra J.A.、Restrepo O.J.、Veiga M.M.
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Universidad Nacional de Colombia Facultad de Minas
University of British Columbia Norman B. Keevil Institute of Mining Engineering