Columbia subject headings:
Cities and towns--Documentation--Italy--History--Congresses.
Cities and towns--Italy--Historiography--Congresses.
Cities and towns--Italy--History--Congresses.
Paleography, Italian--Congresses.
Harvard subject headings:
Cities and towns--Documentation--Italy--History--Congresses.
Cities and towns--Italy--Historiography--Congresses.
Cities and towns--Italy--History--Congresses.
Paleography, Italian--Congresses.
Princeton subject headings:
Cities and towns--Documentation--Italy--History--Congresses.
Cities and towns--Italy--Historiography--Congresses.
Cities and towns--Italy--History--Congresses.
Paleography, Italian--Congresses.