Columbia subject headings:
Harvard subject headings:
Art, Modern--Philosophy.
Art--Philosophy--20th century.
Avant-garde (Aesthetics)--History--20th century.
Avant-garde (Aesthetics)--Philosophy.
Civilization, Modern--20th century
Princeton subject headings:
Art, Modern--Philosophy.
Art--Philosophy--20th century.
Avant-garde (Aesthetics)--History--20th century.
Avant-garde (Aesthetics)--Philosophy.
Civilization, Modern--20th century.