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Seetharama, S.: Role of classification in information services generation (1992)
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Theory and foundation of information retrieval : [Themenheft] (1978)
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Neelameghan, A.: Dynamism and stability in knowledge organization tools : S.R. Ranganathan's contributions (2000)
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Raghavan, K.S.: ¬The general theory of classification as the basis for structuring of subject headings (1985(?))
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Liang, T.-Y.: ¬The basic entity model : a fundamental theoretical model of information and information processing (1994)
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