Columbia subject headings:
United States--Foreign relations--1981-1989.
United States--Politics and government--1981-1989.
World politics--1975-1985.
Harvard subject headings:
United States--Foreign relations--1981-1989.
United States--Foreign relations--1989-
United States--Politics and government--1981-1989.
World politics--1975-1985
Princeton subject headings:
United States--Foreign relations--1981-.
United States--Politics and government--1981-.
World politics--1975-1985.