Columbia subject headings:
Christian antiquities--Italy--Congresses.
Christian art and symbolism--Italy--Medieval, 500-1500--Congresses.
Christian art and symbolism--Italy--To 500--Congresses.
Italy--Antiquities--Congresses.
Italy--Church history--Congresses.
Harvard subject headings:
Christian antiquities--Italy--Congresses.
Christian art and symbolism--Italy--Medieval, 500-1500--Congresses.
Christian art and symbolism--Italy--To 500--Congresses.
Italy--Antiquities--Congresses.
Italy--Church history--Congresses.
Princeton subject headings: