Columbia subject headings:
Jews--Spain--History--20th century--Congresses.
Sephardim--Spain--History--20th century--Congresses.
Spain--Ethnic relations--Congresses.
Harvard subject headings:
Jews--Spain--History--19th century--Congresses.
Jews--Spain--History--20th century--Congresses.
Sephardim--Spain--History--20th century--Congresses.
Spain--Ethnic relations--Congresses.
Spain--History--19th century--Congresses.
Spain--History--20th century--Congresses.
Princeton subject headings: