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