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Borgman, C.L.: Why are online catalogs still hard to use? (1996)
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Piascik, J.M.: Enhanced subject access in Ohio public libraries (1993)
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Alexander, B.B.; Gyeszly, S.D.: OPAC or card catalog : patrons preference in an academic library (1991)
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Lewis, D.W.: Research on the use of online catalogs and its implications for library practice (1987)
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Ensor, P.: User practices in keyword and Boolean searching on an online public access catalog (1992)
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