Columbia subject headings:
Central America--Economic conditions--1979-
Central America--Foreign relations--United States.
Central America--Politics and government--1951-1979.
Central America--Politics and government--1979-
Central America--Social conditions--1979-
National security--Central America.
United States--Foreign relations--Central America.
Harvard subject headings:
Princeton subject headings:
Central America--Economic conditions--1979-
Central America--Foreign relations--United States.
Central America--Politics and government--1951-1979.
Central America--Politics and government--1979-
Central America--Social conditions--1979-
National security--Central America.
United States--Foreign relations--Central America.