Columbia subject headings:
Nicaragua--Foreign relations--United States.
Nicaragua--Politics and government--1979-1990.
United States--Foreign relations--1977-1981.
United States--Foreign relations--1981-1989.
United States--Foreign relations--Nicaragua.
Harvard subject headings:
Nicaragua--Foreign relations--United States
Nicaragua--Politics and government--1979-1990
United States--Foreign relations--1977-1981
United States--Foreign relations--1981-1989
United States--Foreign relations--Nicaragua
Princeton subject headings: