Geology and ore deposits of the Cachoeira do Campo Dom Bosco, and Ouro Branco Quadrangles Minas Gerais, Brazil /
by Robert F. Johnson.
-- Washington : United States Government Printing Office, 1962
- 37 p. + 1 map. --
(Geological Survey Professional Paper ; 341-B).
Depósitos de minerales Geología Minas Gerais ( Brasil )