Columbia subject headings:
Archaeology, Medieval--Italy--Era River Valley.
Castles--Italy--Era River Valley--History--To 1500.
Era River Valley (Italy)--Antiquities.
Excavations (Archaeology)--Italy--Era River Valley.
Land settlement patterns--Italy--Era River Valley--History--To 1500.
Harvard subject headings:
Princeton subject headings:
Archaeology, Medieval--Italy--Era River Valley.
Castles--Italy--Era River Valley--History--To 1500.
Era River Valley (Italy)--Antiquities.
Excavations (Archaeology)--Italy--Era River Valley.
Land settlement patterns--Italy--Era River Valley--History--To 1500.