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Bar-Hillel, Y.; Carnap, R.: ¬An outline of a theory of semantic information (1953)
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Wiener, N.: ¬The human use of human beings : cybernetics and society (1950)
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¬The Role of classification in the modern American library : papers presented at an institute conducted by the University of Illinois Graduate School of Library Science, 1.-4.11.1959 (1959)
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Bar-Hillel, Y.; Carnap, R.: ¬An outline of a theory of semantic information (1952)
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