Columbia subject headings:
Investments, Foreign--Environmental aspects.
Harvard subject headings:
Investments, Foreign--Congresses.
Investments, Foreign--Environmental aspects.
Mineral industries--Foreign ownership--Congresses.
Mineral investment--Environmental aspects--Congresses.
Princeton subject headings:
Investments, Foreign--Congresses.
Mineral industries--Foreign ownership--Congresses.
Mineral investment--Environmental aspects--Congresses.