Columbia subject headings:
Philosophy and civilization--Congresses.
Wittgenstein, Ludwig, 1889-1951--Congresses.
Harvard subject headings:
Philosophy and civilization--Congresses
Wittgenstein, Ludwig, 1889-1951--Congresses.
Princeton subject headings:
Philosophy and civilization--Congresses.
Wittgenstein, Ludwig, 1889-1951--Criticism and interpretation--Congresses.