Columbia subject headings:
Harvard subject headings:
Castles--Italy--Pisa Region--History.
Catholic Church. Diocese of Pisa (Italy)--History.
Catholic church buildings--Italy--Pisa Region--History.
Historic buildings--Italy--Pisa Region.
Parishes--Italy--Pisa Region--History.
Pisa Region (Italy)--Church history.
Pisa Region (Italy)--History.
Princeton subject headings:
Castles--Italy--Pisa Region--History.
Catholic Church. Diocese of Pisa (Italy)--History.
Catholic church buildings--Italy--Pisa Region--History.
Historic buildings--Italy--Pisa Region.
Parishes--Italy--Pisa Region)--History.
Pisa Region (Italy)--Church history.
Pisa Region (Italy)--History.