Columbia subject headings:
Mineral industries--Government policy--United States.
Mineral industries.
Mines and mineral resources.
Strategic materials--Government policy--United States.
Strategic materials.
Harvard subject headings:
Mineral industries
Mineral industries--Government policy--United States.
Mines and mineral resources.
Strategic materials
Strategic materials--Government policy--United States
Princeton subject headings:
Mineral industries--Government policy--United States.
Mineral industries.
Mines and mineral resources.
Strategic materials--Government policy--United States.
Strategic materials.