Columbia subject headings:
Harvard subject headings:
Philosophy, German--History--20th century.
Wittgenstein, Ludwig, 1889-1951. Philosophische Untersuchungen
Princeton subject headings:
Language and languages--Philosophy.
Philosophy, German--History--20th century.
Philosophy.
Semantics (Philosophy)
Wittgenstein, Ludwig, 1889-1951. Philosophische Untersuchungen.