Columbia subject headings:
Mosaics, Medieval.
Harvard subject headings:
Decoration and ornament, Architectural
Mosaics, Byzantine.
Mosaics, Medieval--Italy.
Mosaics, Medieval.
Mosaics--Technique
Mural painting and decoration, Medieval.
Princeton subject headings:
Mosaics, Byzantine.
Mosaics, Medieval--Italy.
Mosaics, Medieval.