Columbia subject headings:
Harvard subject headings:
Africa, Southern--Foreign relations--United States.
Africa, Southern--Politics and government--1975-
Africa, Southern--Strategic aspects.
United States--Foreign relations--Africa, Southern.
Zimbabwe--Politics and government--1979-1980
Princeton subject headings:
Africa, Southern--Foreign relations--United States.
Africa, Southern--Politics and government.
United States--Foreign relations--Africa, Southern.