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Hadamard, J.: ¬An essay on the psychology of invention in the mathematical field (1954)
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Metcalfe, J.: Subject classifying and indexing of libraries and literature (1959)
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Taube, M.; Gull, C.D.; Wachtel, I.S.: Unit terms in coordinate indexing (1952)
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Taube, M.; Wachtel, I.S.: ¬The logical structure of coordinate indexing (1953)
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Dailey, J.E.: ¬The grammar of subject headings: a formulation of rules for subject headings based on syntactical and morphological analysis of the Library of Congress list (1957)
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Frank, O.: Handbuch der Klassifikation. H.1-12 (1953-1968)
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Hulme, E.W.: Principles of book classification (1950)
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Zemanek, H.: Elementare Informationstheorie (1959)
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Lubetzky, S.: Cataloging rules and principles : a critique of the A.L.A. rules for entry and a proposed design for their revision (1953)
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Schrödinger, E.: Geist und Materie (1959)
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Löffler, K.; Fischer, N.: Einführung in die Katalogkunde (1956)
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Ranganathan, S.R.: Elements of library classification (1959)
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