Columbia subject headings:
Constantine I, Emperor of Rome, -337--Congresses.
Emperors--Rome--Biography--Congresses.
Harvard subject headings:
Constantine I, Emperor of Rome, -337--Congresses.
Constantine I, Emperor of Rome, -337--Public opinion--Congresses.
Emperors--Rome--Biography--Congresses.
Emperors--Rome--Congresses.
Rome--History--Constantine I, the Great, 306-337--Congresses.
Princeton subject headings:
Constantine I, Emperor of Rome, -337--Congresses.
Constantine I, Emperor of Rome, -337--Public opinion--Congresses.
Emperors--Rome--Congresses.
Rome--History--Constantine I, the Great, 306-337--Congresses.