Columbia subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1979-
Diplomatic negotiations in international disputes.
United States--Foreign relations--Central America.
Harvard subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1979-
Diplomatic negotiations in international disputes.
United States--Foreign relations--Central America.
Princeton subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1979-
Diplomatic negotiations in international disputes.
United States--Foreign relations--Central America.