Columbia subject headings:
Latin America--Economic policy.
Natural resources--America.
United States--Economic policy.
World War, 1939-1945--Economic aspects.
Harvard subject headings:
Latin America--Economic policy.
Natural resources
United States--Economic policy.
World War, 1939-1945--Economic aspects.
Princeton subject headings:
Latin America--Economic policy.
Natural resources.
United States--Economic policy.
World War, 1939-1945--Economic aspects.