Columbia subject headings:
Aquileia (Italy)--History--Congresses.
Constantine I, Emperor of Rome, -337--Congresses.
Edict of Milan--Congresses.
Italy, Northern--History--Congresses.
Harvard subject headings:
Aquileia (Italy)--History--Congresses.
Constantine I, Emperor of Rome, -337--Congresses.
Edict of Milan--Congresses.
Italy, Northern--History--Congresses.
Princeton subject headings:
Aquileia (Italy)--History--Congresses.
Constantine I, Emperor of Rome, -337--Congresses.
Edict of Milan--Congresses.
Italy, Northern--History--Congresses.