Columbia subject headings:
Arts, European--20th century.
Arts, European.
Avant-garde (Aesthetics)--Europe--History--20th century.
Harvard subject headings:
Arts, European.
Arts, Modern--20th century--Europe.
Avant-garde (Aesthetics)--Europe--History--20th century.
Princeton subject headings:
Arts, European--20th century.
Avant-garde (Aesthetics)
European literature--20th century--History and criticism.