Columbia subject headings:
Duchamp, Marcel, 1887-1968--Criticism and interpretation.
Found objects (Art)--Philosophy.
Wittgenstein, Ludwig, 1889-1951--Aesthetics.
Harvard subject headings:
Duchamp, Marcel, 1887-1968--Criticism and interpretation.
Found objects (Art)--Philosophy.
Wittgenstein, Ludwig, 1889-1951--Aesthetics.
Princeton subject headings: