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DIN 2331: Begriffssysteme und ihre Darstellung (1980)
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DIN 32705: Klassifikationssysteme: Erstellung und Weiterentwicklung von Klassifikationssystemen (1987)
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Austin, D.: Basic concept classes and primitive relations (1982)
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Buchanan, B.: Bibliothekarische Klassifikationstheorie (1989)
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Gödert, W.: Bibliothekarische Klassifikationssysteme und on-line-Kataloge : Grundlagen und Anwendungen (1987)
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Weinberger, O.: Begriffsstruktur und Klassifikation (1980)
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Rescheleit, W.; Menner, L.: Vergleich der Wissensrepräsentationssprache FRL mit Dezimalklassifikation und Facettenklassifikation (1986)
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Batty, D.: ¬The future of DDC in the perspective of current classification research (1989)
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