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Studwell, W.E.: Subject suggestions 7 : some concerns relating to the social sciences (1990)
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Drabenstott, K.M.: Facilitating geographic subdivision assignment in subject headings (1992)
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Subject cataloging manual : Subject headings (1991)
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Drabenstott, K.M.; Simcox, S.; Fenton, E.G.: End-user understanding of subject headings in library catalogs (1999)
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Hearn, S.: Machine-assisted validation of LC Subject Headings : implications for authority file structure (2000)
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