Columbia subject headings:
Africa--Economic conditions--1960-
Africa--Foreign economic relations--United States.
Investments, Foreign--Africa.
United States--Foreign economic relations--Africa.
Harvard subject headings:
Africa--Economic conditions--1960-
Africa--Foreign economic relations--United States.
Investments, Foreign--Africa.
United States--Foreign economic relations--Africa.
Princeton subject headings:
Africa--Economic conditions--1960-
Africa--Foreign economic relations--United States.
Investments, Foreign--Africa.
United States--Foreign economic relations--Africa.