Columbia subject headings:
Rome--History--Augustus, 30 B.C.-14 A.D.
Rome--Politics and government--30 B.C.-68 A.D.
Harvard subject headings:
Rome--History--Augustus, 30 B.C.-14 A.D.
Rome--Politics and government--30 B.C.-68 A.D.
Princeton subject headings:
Augustus, Emperor of Rome, 63 B.C.-14 A.D.
Imperialism--History.
Rome--Politics and government--30 B.C.-68 A.D.