Columbia subject headings:
Harvard subject headings:
Constantine I, Emperor of Rome, -337
Constantine l, Emperor of Rome, -337.
Emperors--Rome--Biography
Princeton subject headings:
Church buildings--Design and construction--4th century--Congresses.
Church history--Primitive and early church, ca. 30-600--Congresses.
Constantine I, Emperor of Rome, -337--Congresses.
Religion and state--Rome--History--Congresses.
Rome--History--Constantine I, the Great, 306-337--Congresses.