Simmons, George Clarke 1923-
Geology and mineral resources of the Barâo de Cocais area minas Gerais, Brazil / by George C. Simmons. -- Washington : United States Government Printing Office, 1968 - 46 p. + 1 map. -- (Geological Survey Professional Paper ; 341-H).
Depósitos de minerales
Geología
Minas Gerais ( Brasil )
553(815.1)
Geology and mineral resources of the Barâo de Cocais area minas Gerais, Brazil / by George C. Simmons. -- Washington : United States Government Printing Office, 1968 - 46 p. + 1 map. -- (Geological Survey Professional Paper ; 341-H).
Depósitos de minerales
Geología
Minas Gerais ( Brasil )
553(815.1)