Columbia subject headings:
Europe, Eastern--Relations--Turkey--Congresses.
Soviet Union--Foreign relations--Turkey--Congresses.
Turkey--Foreign relations--Soviet Union--Congresses.
Turkey--Relations--Europe, Eastern--Congresses.
Harvard subject headings:
Europe, Eastern--Relations--Turkey--Congresses.
Soviet Union--Relations--Turkey--Congresses.
Turkey--Relations--Europe, Eastern--Congresses.
Turkey--Relations--Soviet Union--Congresses.
Princeton subject headings: