Columbia subject headings:
Harvard subject headings:
Castles--Italy--Preci--Exhibitions.
Catholic church buildings--Italy--Preci--Exhibitions.
Christian art and symbolism--Italy--Preci--Exhibitions.
Preci (Italy)--History--Exhibitions.
Preci (Italy)--History--Sources--Exhibitions.
Princeton subject headings:
Castles--Italy--Preci--Exhibitions.
Catholic church buildings--Italy--Preci--Exhibitions.
Preci (Italy)--History--Exhibitions.