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NGUYEN , T.D., NGUYEN , K.D. i NGUYEN , N.T. 2021. Mineralogical and Geochemical Characteristics of Lead-zinc Ore Deposits, and Potential Accompanying Components in the Cho Don - Cho Dien Area, Bac Kan Province, Vietnam. Inżynieria Mineralna. 1, 2 (grudz. 2021). DOI:https://doi.org/10.29227/IM-2021-02-24.