Columbia subject headings:
Africa, Southern--Foreign relations--United States.
United States--Foreign relations--Africa, Southern.
Harvard subject headings:
Africa, Southern--Foreign relations--United States.
United States--Foreign relations--Africa, Southern.
Princeton subject headings:
Africa, Southern--Foreign relations--United States.
South Africa--Foreign relations--United States.
United States--Foreign relations--1981-.
United States--Foreign relations--Africa, Southern.
United States--Foreign relations--South Africa.