Columbia subject headings:
Bell founding--Italy, Northern--History--Congresses.
Bells--Italy, Northern--History--To 1500--Congresses.
Harvard subject headings:
Princeton subject headings:
Archaeology, Medieval--Italy, Northern--Congresses.
Bells--Europe--History--Congresses.
Bells--Italy, Northern--History--Congresses.
Excavations (Archaeology)--Italy, Northern--Congresses.