Columbia subject headings:
Religion and state--Rome.
Rome--Politics and government.
Harvard subject headings:
Religion and state--Rome--History.
Rome--History--Empire, 30 B.C.-476 A.D.
Rome--Politics and government--30 B.C.-476 A.D.
Rome--Religious life and customs.
Princeton subject headings:
Religion and state--Rome.
Rome--Politics and government.