Pederson, L. R. (1966). The mining industry of the Norte Chico, Chile. Northwestern University, Dept. of Geography.
Chicago-referens (17:e uppl.)Pederson, Leland Roger. The Mining Industry of the Norte Chico, Chile. Evanston, Ill: Northwestern University, Dept. of Geography, 1966.
MLA-referens (9:e uppl.)Pederson, Leland Roger. The Mining Industry of the Norte Chico, Chile. Northwestern University, Dept. of Geography, 1966.
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