Columbia subject headings:
Harvard subject headings:
Philosophy, Modern--20th century.
Wittgenstein, Ludwig, 1889-1951--Criticism and interpretation.
Wittgenstein, Ludwig, 1889-1951. Tractatus logico-philosophicus.
Princeton subject headings:
Philosophy, Modern--20th century.
Wittgenstein, Ludwig, 1889-1951--Criticism and interpretation.
Wittgenstein, Ludwig, 1889-1951. Tractatus logico-philosophicus.