Columbia subject headings:
Counterinsurgency--El Salvador.
Counterinsurgency--United States.
El Salvador--Military relations--United States.
Military assistance, American--El Salvador.
United States--Military relations--El Salvador.
Harvard subject headings:
Counterinsurgency--United States.
El Salvador--Military relations--United States.
El Salvador--Politics and government.
United States--Military relations--El Salvador.
Princeton subject headings: