Columbia subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1979-
El Salvador--Politics and government--1979-1992.
Revolutions--Central America.
United States--Foreign relations--Central America.
Harvard subject headings:
Central America--Foreign relations--United States
Central America--Politics and government--1979-
El Salvador--Politics and government--1979-1992
Revolutions--Central America
United States--Foreign relations--Central America
Princeton subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1979-
El Salvador--Politics and government--1979-1992.
Revolutions--Central America.
United States--Foreign relations--Central America.