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Dewey, M.: ¬A classification and subject index for cataloguing and arranging the books and pamphlets of a library (1876)
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Liu, S.: Decomposing DDC synthesized numbers (1996)
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Satija, M.P.: Book numbers in India with special reference to the author table for Indian names designed and used by the National Library of India (2007)
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Fautsch, C.; Savoy, J.: Algorithmic stemmers or morphological analysis? : an evaluation (2009)
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