Columbia subject headings:
Art, Medieval--Congresses.
Art, Medieval--Italy--Congresses.
Civilization, Medieval--Congresses.
Harvard subject headings:
Architecture, Medieval--Congresses
Art, Medieval--Congresses
Art, Medieval--Italy--Congresses.
Christian civilization--Congresses.
Civilization, Medieval--Congresses
Princeton subject headings:
Art, Medieval--Congresses.
Art, Medieval--Italy--Congresses.
Literature, Medieval--Congresses.