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Larson, R.R.: Experiments in automatic Library of Congress Classification (1992)
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- Journal of the American Society for Information Science. 43(1992), S.130-148
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Veenema, F.: To index or not to index (1996)
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- Canadian journal of information and library science. 21(1996) no.2, S.1-22
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Booth, A.: How consistent is MEDLINE indexing? (1990)
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- Health libraries review. 7(1990) no.1, S.22-26