Columbia subject headings:
Harvard subject headings:
Civil rights--El Salvador
Civil rights--Nicaragua
El Salvador--Foreign relations--United States.
Human rights--El Salvador
Human rights--Nicaragua
Nicaragua--Foreign relations--United States.
United States--Foreign relations--El Salvador.
United States--Foreign relations--Nicaragua.
Princeton subject headings:
Civil rights--El Salvador.
Civil rights--Nicaragua.
El Salvador--Foreign relations--United States.
Nicaragua--Foreign relations--United States.
United States--Foreign relations--El Salvador.
United States--Foreign relations--Nicaragua.