Columbia subject headings:
Architecture--Italy--Campania.
Domes--Conservation and restoration--Italy--Campania.
Domes--Italy--Campania.
Harvard subject headings:
Architecture--Conservation and restoration--Italy--Campania.
Architecture--Italy--Campania.
Domes--Conservation and restoration--Italy--Campania.
Domes--Italy--Campania.
Princeton subject headings:
Domes--Italy--Campania.