Columbia subject headings:
Harvard subject headings:
Civilization, Ancient--Congresses
Classical antiquities--Congresses.
East and West--Congresses
Greece--Antiquities--Congresses.
Greece--History--To 146 B.C.--Congresses.
History, Ancient--Congresses
Princeton subject headings:
Civilization, Ancient--Congresses.
East and West--Congresses.
History, Ancient--Congresses.