Columbia subject headings:
Economic development--Brazil--History.
Mineral industries--Brazil.
Mineral industries--Government policy--Brazil.
Harvard subject headings:
Brazil--Economic policy.
Economic development--Brazil--History.
Mineral industries--Economic aspects--Brazil.
Mineral industries--Government policy--Brazil.
Princeton subject headings:
Brazil--Economic policy.
Economic development--Brazil--History.
Mineral industries--Economic aspects--Brazil.
Mineral industries--Government policy--Brazil.