Columbia subject headings:
El Salvador--Foreign relations--Honduras.
El Salvador-Honduras Conflict, 1969.
Honduras--Foreign relations--El Salvador.
Pan-American treaties and conventions.
Harvard subject headings:
El Salvador--Foreign relations--Honduras.
El Salvador-Honduras Conflict, 1969.
Honduras--Foreign relations--El Salvador.
Pan-American treaties and conventions.
Princeton subject headings:
El Salvador--Foreign relations--Honduras.
El Salvador-Honduras Conflict, 1969.
Honduras--Foreign relations--El Salvador.
Pan-American treaties and conventions.