Columbia subject headings:
Harvard subject headings:
Church history--Primitive and early church, ca. 30-600
Constantine I, Emperor of Rome, -337
Emperors--Rome--Biography
Religion and state--Rome--History.
Rome--History--Constantine I, the Great, 306-337.
Rome--History--Empire, 284-476.
Princeton subject headings:
Church history--Primitive and early church, ca. 30-600.
Constantine I, Emperor of Rome, -337.
Emperors--Rome--Biography.
Religion and state--Rome--History.
Rome--History--Constantine I, the Great, 306-337.