Columbia subject headings:
Aesthetics--Congresses.
Arts, Modern--20th century--Congresses.
Arts--Philosophy--Congresses.
Space (Art)--Congresses.
Harvard subject headings:
Aesthetics--Congresses
Arts, Modern--20th century--Congresses
Arts--Philosophy--Congresses
Space (Art)--Congresses.
Princeton subject headings:
Aesthetics--Congresses.
Arts, Modern--20th century--Congresses.
Arts--Philosophy--Congresses.
Space (Art)--Congresses.