Columbia subject headings:
Harvard subject headings:
Central America--Economic conditions.
Central America--Foreign relations--United States.
Central America--History.
Central America--Politics and government--1979-
Central America--Social conditions.
Revolutions--Central America--History--20th century.
United States--Foreign relations--Central America.
Princeton subject headings:
Central America--Economic conditions.
Central America--Foreign relations--United States.
Central America--History.
Central America--Politics and government--1979-
Central America--Social conditions.
Revolutions--Central America--History--20th century.
United States--Foreign relations--Central America.