Columbia subject headings:
Art, American--History--20th century.
Harvard subject headings:
Art, Modern--20th century--Congresses
Art--Political aspects--History--20th century--Congresses.
Arts, European--20th century.
Avant-garde (Aesthetics)--History--20th century--Congresses.
Le Corbusier, 1887-1965--Political and social views.
Painting, European--20th century.
Surrealism--Europe.
Princeton subject headings:
Arts, European--20th century.
Le Corbusier, 1887-1965--Political and social views.
Painting, European--20th century.
Surrealism--Europe.