Columbia subject headings:
Harvard subject headings:
Criticism--History--20th century
Literature--History and criticism--Theory, etc.
Literature--Philosophy
Wittgenstein, Ludwig, 1889-1951--Knowledge--Literature.
Princeton subject headings:
Criticism--History--20th century.
Literature--History and criticism--Theory, etc.
Literature--Philosophy.
Wittgenstein, Ludwig, 1889-1951--Knowledge--Literature.