Columbia subject headings:
Central America--Civilization.
Central America--Economic conditions.
Central America--Politics and government.
Central America--Social conditions.
Central America.
Harvard subject headings:
Central America--Civilization.
Central America--Economic conditions.
Central America--Politics and government.
Central America--Social conditions.
Central America.
Princeton subject headings:
Central America--Civilization.
Central America--Economic conditions--1979-
Central America--Politics and government--1979-
Central America--Social conditions--1979-