Columbia subject headings:
Civilization, Greco-Roman--Congresses.
Harvard subject headings:
Civilization, Greco-Roman--Congresses
Princeton subject headings:
Hellenism--History--Congresses.
Italy--Antiquities--Congresses.
Italy--Civilization--Greek influences--Congresses.
Italy--Civilization--History--Congresses.
Italy--History--To 476--Congresses.