Columbia subject headings:
Harvard subject headings:
Greece--Civilization--Congresses.
Greece--Social life and customs--Congresses.
Rome--Civilization--Congresses.
Rome--Social life and customs--Congresses.
Social status--History--Congresses.
Princeton subject headings:
Greece--Civilization--Congresses.
Greece--Social life and customs.
Rome--Civilization--Congresses.
Rome--Social life and customs--Congresses.
Social status--Congresses.