Columbia subject headings:
Harvard subject headings:
Philosophers--Austria--Biography
Philosophers--Austria--Biography--Pictorial works.
Philosophers--Great Britain--Biography
Philosophy, Modern--20th century.
Wittgenstein, Ludwig, 1889-1951
Wittgenstein, Ludwig, 1889-1951--Pictorial works.
Princeton subject headings:
Philosophers--Austria--Biography.
Philosophers--Great Britain--Biography.
Wittgenstein, Ludwig, 1889-1951.