Columbia subject headings:
Central America--Foreign relations--United States.
National security--United States.
United States--Foreign relations--1945-1989.
United States--Foreign relations--Central America.
Harvard subject headings:
Central America--Foreign relations--United States.
National security--United States
United States--Foreign relations--1945-
United States--Foreign relations--1945-1989.
United States--Foreign relations--Central America.
Princeton subject headings:
Central America--Foreign relations--United States.
National security--United States.
United States--Foreign relations--1945-1989.
United States--Foreign relations--Central America.