Columbia subject headings:
Harvard subject headings:
Greece--Antiquities--Congresses.
Greece--Relations--Iran--History--Congresses.
Iran--Antiquities--Congresses.
Iran--Relations--Greece--History--Congresses.
Princeton subject headings:
Greece--Antiquities--Congresses.
Greece--Relations--Iran--Congresses.
Iran--Antiquities--Congresses.
Iran--Relations--Greece--Congresses.