Columbia subject headings:
Amphitheaters--Italy--Congresses.
Aquileia (Italy)--Antiquities--Congresses.
Italy--Antiquities--Congresses.
Harvard subject headings:
Amphitheaters--Italy--Congresses.
Aquileia (Italy)--Antiquities--Congresses.
Princeton subject headings:
Amphitheaters--Italy, Northern--Congresses.
Amphitheaters--Italy--Aquileia--Congresses.
Aquileia (Italy)--Antiquities, Roman--Congresses.
Excavations (Archaeology)--Italy, Northern--Congresses.
Excavations (Archaeology)--Italy--Aquileia--Congresses.
Italy, Northern--Antiquities, Roman--Congresses.
Theaters--Italy, Northern--Congresses.
Theaters--Italy--Aquileia--Congresses.