Columbia subject headings:
El Salvador--Economic conditions--1945-
El Salvador--Politics and government--1944-1979.
Insurgency--El Salvador.
Harvard subject headings:
El Salvador--Economic conditions--1945-
El Salvador--Politics and government--1944-
El Salvador--Politics and government--1944-1979.
Insurgency--El Salvador.
Princeton subject headings:
El Salvador--Economic conditions--1945-
El Salvador--Politics and government--1944-.