Columbia subject headings:
Language and languages--Philosophy.
Liebrucks, Bruno, 1911-1986.
Philosophy.
Harvard subject headings:
Language and languages--Philosophy
Liebrucks, Bruno, 1911-
Liebrucks, Bruno, 1911-1986.
Philosophy.
Princeton subject headings:
Language and languages--Philosophy.
Liebrucks, Bruno, 1911-1986.
Philosophy.