Columbia subject headings:
Harvard subject headings:
Normans--Italy--Pescara River Valley.
Pescara River Valley (Italy)--History.
San Giovanni Teatino (Italy)--History.
Princeton subject headings:
Normans--Italy--Pescara River Valley.
Normans--Italy--San Giovanni Teatino.
Pescara River Valley--History.
San Giovanni Teatino (Italy)--History.