Columbia subject headings:
Harvard subject headings:
Aquileia (Italy)--Civilization--Congresses.
Attila, -453--Congresses.
Huns--Congresses.
Huns--Italy--Congresses.
Princeton subject headings:
Aquileia (Italy)--Civilization--Congresses.
Attila, -453--Congresses.
Huns--Congresses.
Huns--Italy--Congresses.