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