Columbia subject headings:
Greece--Kings and rulers--Religious aspects--Congresses.
Kings and rulers--Religious aspects--Congresses.
Harvard subject headings:
Greece--History--To 146 B.C.--Congresses.
Greece--Kings and rulers--Religious aspects--History--Congresses.
Saints--Cult--Greece--History--Congresses.
Princeton subject headings:
Greece--Kings and rulers--Religious aspects--Congresses.
Kings and rulers--Religious aspects--Congresses.