Columbia subject headings:
Harvard subject headings:
Basilica di S. Vitale (Ravenna, Italy)
Basilica di S. Vitale (Ravenna, Italy)--Congresses.
Mosaics, Byzantine--Conservation and restoration--Italy--Congresses.
Mosaics, Byzantine--Conservation and restoration--Italy--Ravenna--Congresses.
Mosaics, Early Christian--Conservation and restoration--Italy--Congresses.
Mosaics, Italian--Conservation and restoration--Italy--Congresses.
Mosaics, Medieval--Conservation and restoration--Italy--Congresses.
Mosaics--Conservation and restoration--Italy--Congresses.
Ravenna (Italy)--Buildings, structures, etc.
San Vitale (Church : Ravenna, Italy)
Princeton subject headings:
Basilica di S. Vitale (Ravenna, Italy)--Conservation and restoration--Congresses.
Mosaics--Italy--Conservation and restoration--Congresses.