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Layman E. Allen. Wff 'n proof. The game of modern logic. Wff 'n proof, New Haven, Conn., 1962, viii + 224 pp. - Layman E. Allen. Wff. The beginner's game of modern logic. Wff 'n proof, New Haven, Conn., 1963, 78 pp.
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Layman E. Allen. Wff 'n proof. The game of modern logic. Wff 'n proof, New Haven, Conn., 1962, viii + 224 pp.
Layman E. Allen. Wff. The beginner's game of modern logic. Wff 'n proof, New Haven, Conn., 1963, 78 pp.
Published online by Cambridge University Press: 12 March 2014
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- Copyright © Association for Symbolic Logic 1965