Columbia subject headings:
Harvard subject headings:
Architecture, Medieval--Italy--Congresses.
Church architecture--Italy--Congresses.
Italy--Church history--Congresses.
Monasticism and religious orders--Italy--History--Middle Ages, 600-1500--Congresses.
Princeton subject headings:
Architecture, Medieval--Italy--Congresses.
Church architecture--Italy--Congresses.
Italy--Church history.
Monasteries--Italy--Congresses.
Monasticism and religious orders--Italy--History--Middle Ages, 600-1500--Congresses.