Columbia subject headings:
Castles--Italy--Turano River Valley--History--To 1500.
Fortification--Italy--Turano River Valley--History--To 1500.
Land settlement patterns--Italy--History--To 1500.
Turano River Valley (Italy)--Antiquities.
Harvard subject headings:
Architecture, Medieval--Italy--Turano River Valley.
Castles--Italy--Turano River Valley--History--To 1500.
Turano River Valley (Italy)--History.
Vernacular architecture--Italy--Turano River Valley.
Princeton subject headings:
Castles--Italy--Turano River Valley--History--To 1500.
Fortification--Italy--Turano River Valley--History--To 1500.
Land settlement patterns--Italy--History--To 1500.
Turano River Valley (Italy)--Antiquities.