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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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Raghavan, K.S.: ¬The general theory of classification as the basis for structuring of subject headings (1985(?))
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Lu, S.-j.: ¬A study on Chinese subject headings (1997)
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Mikacic, M.: Statistical system for subject designation (SSSD) for libraries in Croatia (1996)
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Devadason, F.J.: Postulate-Based Permuted Subject Indexing Language as a metalanguage for computer-aided generation of information retrieval thesaurus (1983)
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