Columbia subject headings:
Italy--History--To 476--Congresses.
Rome--History--Empire, 30 B.C.-476 A.D.--Congresses.
Harvard subject headings:
Italy--History--To 476--Congresses.
Rome--History--Empire, 30 B.C.-476 A.D.--Congresses.
Princeton subject headings:
Italy--History--To 476--Congresses.
Rome--History--Empire, 30 B.C.-476 A.D.--Congresses.