Columbia subject headings:
Emperors--Rome--Religious aspects--Christianity.
Emperors--Rome--Titles.
Rome--History--Empire, 30 B.C.-476 A.D.
Titles of honor and nobility--Rome--History.
Harvard subject headings:
Emperors--Rome--Religious aspects--Christianity
Emperors--Rome--Titles
Rome--History--Empire, 30 B.C.-476 A.D.
Titles of honor and nobility--Rome--History.
Princeton subject headings:
Augustus, Emperor of Rome, 63 B.C.-14 A.D.
Rome--History--Augustus, 30 B.C.-14 A.D.