Singewald, Joseph Theophilus

Ore deposition in the Bolivian tin-silver deposits: discussion - Lancaster, PA Society of Economic Geologists January 1921 - pp. 60-69 ilus.


ESTAŅO
GENESIS-YACIMIENTO
GEOLOGIA ECONOMICA
PLATA
SULFUROS


BOLIVIA
COLQUECHACA

CARMEN, MINA PORVENIR, MINA SAN FRANCISCO, MINA