Columbia subject headings:
Harvard subject headings:
Africa--Economic conditions--1960-
Africa--Foreign relations--1960-
Africa--Relations--United States.
Africa--Strategic aspects.
United States--Foreign relations--1981-1989.
United States--Foreign relations--1989-
United States--Relations--Africa.
Princeton subject headings:
Africa--Economic conditions--1960-
Africa--Foreign relations--1960-
Africa--Relations--United States.
Africa--Strategic aspects.
United States--Foreign relations--1981-.
United States--Relations--Africa.