Columbia subject headings:
Ayala, Edwin Ernesto, 1966-
El Salvador--History--Civil War, 1979-1992.
Guerrillas--El Salvador--History--20th century.
Insurgency--El Salvador--History--20th century.
Harvard subject headings:
Ayala, Edwin Ernesto, 1966-
El Salvador--History--Civil War, 1979-1992
Guerrillas--El Salvador--History--20th century.
Insurgency--El Salvador--History--20th century
Princeton subject headings:
El Salvador--History--Civil War, 1979-1992.
Guerrillas--El Salvador.