Columbia subject headings:
Art, Medieval--Congresses.
Christian art and symbolism--Congresses.
Harvard subject headings:
Architecture, Medieval--Congresses
Art, Medieval--Congresses
Christian art and symbolism--Medieval, 500-1500--Congresses
Princeton subject headings:
Architecture, Medieval--Congresses.
Art, Medieval--Congresses.
Art, Romanesque--Congresses.
Christian art and symbolism--Medieval, 500-1500--Congresses.