Columbia subject headings:
Central America--Relations--United States.
Nicaragua--Politics and government--1979-1990.
Nicaragua--Relations--United States.
United States--Relations--Central America.
United States--Relations--Nicaragua.
Harvard subject headings:
Central America--Relations--United States.
Nicaragua--Politics and government--1979-1990.
Nicaragua--Relations--United States.
United States--Relations--Central America.
United States--Relations--Nicaragua.
Princeton subject headings:
Nicaragua--Foreign relations--United States.
Nicaragua--Politics and government--1979-1990.
United States--Foreign relations--Nicaragua.