Columbia subject headings:
Sculpture, Italian--12th century.
Sculpture, Romanesque.
Harvard subject headings:
Relief (Sculpture), Italian--Italy--Milan.
Relief (Sculpture), Italian--Italy--Verona.
Relief (Sculpture), Romanesque--Italy--Milan.
Relief (Sculpture), Romanesque--Italy--Verona.
Princeton subject headings:
Sculpture, Italian.
Sculpture, Romanesque--Italy.