Base-metal deposits of the Cordillera Negra, Departamento de Ancash, Peru : geologic investigations in the American Republics /

Autor Bodenlos, Alfred J., Straczek, John A.
Vydáno 1957

Lead-zinc deposits of Cordillera Blanca and the northern Cordillera Huayhuash, Peru : geologic investigations in the American Republics /

Autor Bodenlos, Alfred J., Ericksen, George Edward, 1920-1996
Vydáno 1955