Columbia subject headings:
Caltagirone (Italy)--Buildings, structures, etc.
Chiesa di San Nicola (Caltagirone, Italy)
Church architecture--Conservation and restoration--Italy--Caltagirone.
Harvard subject headings:
Caltagirone (Italy)--Buildings, structures, etc.
Chiesa di San Nicola (Caltagirone, Italy)
Church architecture--Conservation and restoration--Italy--Caltagirone.
Princeton subject headings: