Columbia subject headings:
Rome--Boundaries--History.
Rome--Foreign relations.
Rome--History--Augustus, 30 B.C.-14 A.D.
Harvard subject headings:
Rome--Boundaries--History.
Rome--Foreign relations.
Rome--History--Augustus, 30 B.C.-14 A.D.
Princeton subject headings:
Rome--Boundaries--History.
Rome--Foreign relations.
Rome--History--Augustus, 30 B.C.-14 A.D.