Columbia subject headings:
Harvard subject headings:
Criterion (Theory of knowledge)
Judgment (Logic)
Language and languages--Philosophy
Necessity (Philosophy)
Wittgenstein, Ludwig, 1889-1951
Princeton subject headings:
Criterion (Theory of knowledge)
Judgment (Logic)
Language and languages--Philosophy.
Necessity (Philosophy)
Wittgenstein, Ludwig, 1889-1951.