Columbia subject headings:
Art, Medieval--Congresses.
Civilization, Medieval--Congresses.
Middle Ages--Congresses.
Harvard subject headings:
Art, Medieval--Congresses
Art, Medieval--Italy--Congresses.
Civilization, Medieval--Congresses
Middle Ages--Congresses
Princeton subject headings:
Art, Medieval--Congresses.
Civilization, Medieval--Congresses.
Middle Ages--Congresses.