Columbia subject headings:
Harvard subject headings:
United States--Foreign relations--1981-1989.
United States--Foreign relations--1989-
United States--Foreign relations--1989-1993.
United States--Politics and government--1981-1989.
United States--Politics and government--1989-
United States--Politics and government--1989-1993.
Princeton subject headings:
United States--Foreign relations--1981-1989.
United States--Foreign relations--1989-
United States--Politics and government--1981-1989.
United States--Politics and government--1989-