Columbia subject headings:
Harvard subject headings:
Cities and towns, Ancient--Greece--Congresses.
Greece--Antiquities--Congresses.
Princeton subject headings:
Black Sea Region--Antiquities--Congresses.
Cities and towns, Ancient--Black Sea Region--Congresses.
Cities and towns, Ancient--Greece--Congresses.
Cities and towns, Ancient--Mediterranean Region--Congresses.
City-states--Greece--History--Congresses.
Greece--Antiquities--Congresses.
Greece--Colonies--History--Congresses.
Mediterranean Region--Antiquities--Congresses.