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Drabenstott, K.M.; Vizine-Goetz, D.: Search trees for subject searching in online catalogs (1990)
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Vizine-Goetz, D.; Drabenstott, K.M.: Computer and manual analysis of subject terms entered by online catalog users (1991)
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Drabenstott, K.M.; Vizine-Goetz, D.: Using subject headings for online retrieval : theory, practice and potential (1994)
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