Columbia subject headings:
Harvard subject headings:
Archaeology, Medieval--Italy--Congresses.
Inland water transportation--Italy--History--Congresses.
Inland water transportation--Italy--History--To 1500--Congresses.
Italy--History--476-1268--Congresses.
Roads--Italy--History--Congresses.
Roads--Italy--History--To 1500--Congresses.
Transportation--Italy--History--Congresses.
Transportation--Italy--History--To 1500--Congresses.
Princeton subject headings:
Archaeology, Medieval--Italy--Congresses.
Inland water transportation--Italy--History--Middle ages, 600-1500--Congresses.
Italy--History--Middle ages, 600-1500--Congresses.
Roads--Italy--History--Middle ages, 600-1500--Congresses.
Transportation--Italy--History--Middle ages, 600-1500--Congresses.