Columbia subject headings:
Corporations, Foreign--Latin America.
Government corporations--Latin America.
Nationalism--Latin America.
Petroleum industry and trade--Political aspects--Latin America.
Harvard subject headings:
Corporations, Foreign--Latin America.
Government corporations--Latin America.
Nationalism--Latin America
Petroleum industry and trade--Political aspects--Latin America.
Princeton subject headings:
Corporations, Foreign--Latin America.
Government corporations--Latin America.
Nationalism--Latin America.
Petroleum industry and trade--Political aspects--Latin America.