Columbia subject headings:
Central America--Foreign relations.
Central America--History--1821-1951.
Central America--History--1951-1979.
Geopolitics--Central America.
Social conflict--Central America.
Harvard subject headings:
Central America--Foreign relations.
Central America--History--1821-1951.
Central America--History--1951-
Geopolitics--Central America.
Social conflict--Central America.
Princeton subject headings:
Central America--Foreign relations.
Central America--History--1821-1951.
Central America--History--1951-1979.
Central America--History--1979-
Geopolitics--Central America.
Social conflict--Central America.