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Classification Research Group: ¬The need for a faceted classification as the basis of all methods of information retrieval (1985)
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Hjoerland, B.; Hartel, J.: Introduction to a Special Issue of Knowledge Organization (2003)
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Waddington, M.: ¬The AAT Application Protocol (1989)
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McIlwaine, I.C.; Broughton, V.: ¬The Classification Research Group : then and now (2000)
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Bosman, F.; Hollander, F. den; Maanen, L. van: CoBRA/RUG: expert system for user queries (1994)
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