Columbia subject headings:
El Salvador--Foreign relations.
El Salvador--Politics and government--1944-1979.
Revolutions--El Salvador.
Harvard subject headings:
El Salvador--Foreign relations--Latin America--Congresses.
El Salvador--Foreign relations--United States--Congresses.
El Salvador--Politics and government--1979-1992--Congresses.
Latin America--Foreign relations--El Salvador--Congresses.
United States--Foreign relations--El Salvador--Congresses.
Princeton subject headings:
El Salvador--Foreign relations.
El Salvador--Politics and government--1944-.
Revolutions--El Salvador.