Columbia subject headings:
Architecture, Medieval--Italy--Naples.
Cathedrals--Italy--Naples.
Church architecture--Italy--Naples.
Duomo (Naples, Italy)
Italy--History--476-1268.
Harvard subject headings:
Christian art and symbolism--Italy--Naples--Congresses.
Church architecture--Italy--Naples--Congresses.
Duomo (Naples, Italy)--Congresses.
Italy--History--476-1268.
Naples (Italy)--Buildings, structures, etc.
Princeton subject headings:
Christian art and symbolism--Italy--Naples--Congresses.
Duomo (Naples, Italy)--Congresses.
Naples (Italy)--Buildings, structures, etc.