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Krishnamurthy, M.; Satija, M.P.; Martínez-Ávila, D.: Classification of classifications : species of library classifications (2024)
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Rolland-Thomas, P.: Thesaural codes : an appraisal of their use in the Library of Congress Subject Headings (1993)
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Beghtol, C.: From the universe of knowledge to the universe of concepts : the structural revolution in classification for information retrieval (2008)
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Wright, A.: Glut : mastering information through the ages (2007)
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Craven, T.C.: Salient node notation (1979)
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