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1.- MINERAL potential of Portugal
Martins, L., ed; Borralho, V., ed.
Lisbon: Instituto Geológico e Mineiro, 1998
III / 14-9-37
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2.- Principles of geochemical prospecting: techniques of prospecting for non-ferrous ores and rare metal
Ginzburg, I.L.; Sokolov, V.P., trad.
London; New York: Pergamon Press, 1960
Monographs on Earth Sciences
Peñarroya S/5-3.35
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