Columbia subject headings:
Harvard subject headings:
Greeks--Russia--History--Congresses.
Mediterranean Region--History--Congresses.
Russia--Foreign relations--Mediterranean Region.
Russia--History--Congresses.
Princeton subject headings:
Greece--Relations--Russia--Congresses.
Mediterranean Region--Relations--Russia--Congresses.
Russia--Relations--Greece--Congresses.
Russia--Relations--Mediterranean Region--Congresses.