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Classification and communication : Papers presented at the 2nd Regional Conference of International Federation for Documentation, Committee on Classification research (FID/CR), 15.11.1985, New Dehli (1985(?))
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Classification of library materials : current and future potential for providing access (1990)
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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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Körner, S.: Classification theory (1976)
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Sparck Jones, K.: Revisiting classification for retrieval (2005)
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