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Jones, R.M.: Online catalogue research in Europe (1989)
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Hildreth, C.R.: Are Web-based OPACs more effective retrieval systems than their conventional predecessors? : an experimental study (2000)
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Sauperl, A.; Saye, J.D.: Have we made any progress? : catalogues of the future revisited (2009)
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Biagetti, M.T.: Pertinence perspective and OPAC enhancement
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Pollitt, A.S.; Tinker, A.J.; Braekevelt, P.A.J.: Improving access to online information using dynamic faceted classification (1998)
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