Columbia subject headings:
Art, European--Congresses.
Art, Modern--Congresses.
Harvard subject headings:
Art and history--Congresses.
Imagery (Psychology) in art--Congresses.
Information processing--Congresses.
Symbolism in art--Congresses.
Visual perception--Congresses
Princeton subject headings:
Art, European--Congresses.
Art, Modern--Congresses.