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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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Tudhope, D.; Binding, C.; Blocks, D.; Cunliffe, D.: Compound descriptors in context : a matching function for classifications and thesauri (2002)
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Aitchison, J.: ¬A classification as a source for a thesaurus : the bibliographic classification of H.E. Bliss as a source of thesaurus terms and structure (1986)
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Cross-reference index : a guide to search terms (1989)
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