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- Footnote
- Original in: Information retrieval today: papers presented at an Institute conducted by the Library School and the Center for Continuation Study, University of Minnesota, Sept. 19-22, 1962. Ed. by Wesley Simonton. Minneapolis, Minn.: The Center, 1963. S.21-36.
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Svenonius, E.: Design of controlled vocabularies (1990)
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Willetts, M.: Investigation of the relation between terms in thesauri (1975)
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Lancaster, F.W.: Vocabulary control in information retrieval systems (1977)
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