Columbia subject headings:
Children--Language.
Language and languages--Philosophy.
Wittgenstein, Ludwig, 1889-1951.
Harvard subject headings:
Children--Language
Language and education.
Language and languages--Philosophy
Wittgenstein, Ludwig, 1889-1951
Wittgenstein, Ludwig, 1889-1951--Contributions in philosophy of language.
Princeton subject headings:
Children--Language.
Language and languages--Philosophy.
Wittgenstein, Ludwig, 1889-1951.