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Quijano-Solís, A.; Moreno-Jiménex, P.M.; Figueroa-Servín, R.: Automated authority files of Spanish-language subject headings (2000)
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Austin, D.; Digger, J.A.: PRECIS: The Preserved Context Index System (1985)
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Gnoli, C.: Knowledge organization in Italy (2004)
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Lucarelli, A.: Work in progress on the new Soggettario (2005)
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