Columbia subject headings:
Aesthetics, Modern--20th century.
Aesthetics.
Arts, Modern--20th century.
Duchamp, Marcel, 1887-1968--Aesthetics.
Kant, Immanuel, 1724-1804.
Harvard subject headings:
Aesthetics.
Modernism (Art)
Princeton subject headings:
Aesthetics, Modern--20th century.
Art--Philosophy.
Arts, Modern--20th century.
Duchamp, Marcel, 1887-1968--Aesthetics.
Kant, Immanuel, 1724-1804.