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El "Gibraltar económico" : Franco y Riotinto, 1936 - 1954
Gómez Mendoza, Antonio, (1994)
The Rio Tinto Company : an economic history of a leading international mining concern, 1873 -1954
Harvey, Charles, (1981)
Value chain dynamics of Chinese copper mining in Zambia : enclave or linkage development?
Fessehaie, Judith, (2013)