Columbia subject headings:
Harvard subject headings:
Russia--Relations--Spain--Congresses.
Spain--Relations--Russia--Congresses.
Spanish language--Study and teaching--Russia--Congresses.
Spanish literature--Russia--History and criticism--Congresses.
Spanish philology--Study and teaching--Russia--Congresses.
Princeton subject headings:
Russia--Relations--Spain--Congresses.
Spain--Relations--Russia--Congresses.
Spanish language--Study and teaching--Russia--Congresses.
Spanish literature--Russia--History and criticism--Congresses.
Spanish philology--Study and teaching--Russia--Congresses.