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Williamson, N.J.: ¬The Library of Congress Classification and the computer: research in progress (1989)
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Williamson, N.J.: ¬The role of classification in online systems (1989)
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Williamson, N.J.: Education for positions in the subject control of information (1987)
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Williamson, N.J.: Subject access in the on-line environment (1984)
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Williamson, N.J.: Online Klassifikation : Gegenwart und Zukunft (1988)
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Gödert, W.: Klassifikatorische Inhaltserschließung : Ein Übersichtsartikel als kommentierter Literaturbericht (1990)
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Miksa, S.D.; Burnett, K.; Bonnici, L.J.; Kim , J.: ¬The development of a facet analysis system to identify and measure the dimensions of interaction in online learning (2007)
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Williamson, N.J.: Deriving a thesaurus from a restructured UDC (1996)
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Sukiasyan, E.: Classification systems in their historical development : problems of typology and terminology (1998)
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Thomas, A.R.: Bliss Classification update (1995)
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