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Janes, J.W.: Towards a search theory of information (1989)
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Khosh-khui, A.: Statistical analysis of the association between Library of Congress Subject Headings and their corresponding class notations in the main classes of LCC and DDC (1985)
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Dovbenko, M.A.; Umanski, A.N.: ¬A comparative analysis of information retrieval thesauri and normalised scientific and technical terminologies with the aim of their coordinated development (1980)
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