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Klugman, S.: Failures in subject retrieval (1989)
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Borgman, C.L.; Hirsh, S.G.; Walter, V.A.; Gallagher, A.L.: Childrens searching behavior on browsing and keyword online catalogs : the Science Library Catalog project (1995)
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Long, C.E.: ¬The Internet's value to catalogers : results of a survey (1997)
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Slack, F.: Subject searching on OPACs : problems and help provision (1991)
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Tillotson, J.: Is keyword searching the answer? (1995)
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