Columbia subject headings:
Christian art and symbolism--Italy--Lazio--Medieval, 500-1500--Congresses.
Cistercian architecture--Italy--Lazio--Congresses.
Cistercian art--Italy--Lazio--Congresses.
Cistercians--Italy--Congresses.
Harvard subject headings:
Christian art and symbolism--Medieval, 500-1500--Italy--Lazio--Congresses.
Cistercian art--Italy--Lazio--Congresses.
Cistercians--Italy--Congresses.
Princeton subject headings:
Christian art and symbolism--Medieval, 500-1500--Italy--Lazio--Congresses.
Cistercian art--Italy--Lazio--Congresses.
Cistercians in Italy--Congresses.