Columbia subject headings:
Harvard subject headings:
Architecture, Byzantine--Congresses.
Architecture, Medieval--Italy--Congresses.
Art, Byzantine--Congresses.
Art, Byzantine--Italy--Congresses.
Art, Medieval--Italy--Congresses.
Princeton subject headings:
Architecture, Byzantine--Congresses.
Architecture, Medieval--Italy--Congresses.
Art, Byzantine--Congresses.
Art, Medieval--Italy--Congresses.