Mineral potential of Portugal / co-ordination and compilation by Luís Martins, Victor Borralho ; colaboration of José Moreira... [et al.]

Mineral potential of Portugal / co-ordination and compilation by Luís Martins, Victor Borralho ; colaboration of José Moreira... [et al.] . - Lisbon : Instituto Geológico e Mineiro, 1998 . - 60 p. : il. 30 cm
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