Columbia subject headings:
Harvard subject headings:
Classical antiquities--Congresses.
Greece--Antiquities--Congresses.
Greece--History--Congresses.
Rome--Antiquities--Congresses.
Rome--History--Congresses.
Princeton subject headings:
Classical antiquities--Congresses.
Greece--Antiquities--Congresses.
Greece--History--Congresses.
Rome--Antiquities--Congresses.
Rome--History--Congresses.