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Holm, L.A.: ONE project : results and experiences (1999)
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Poo, D.C.C.; Khoo, C.S.G.: Online Catalog Subject Searching (2009)
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Jones, R.M.: Online catalogue research in Europe (1989)
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Walker, S.: Subject access in online catalogues (1991)
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Bangalore, N.S.: Re-engineering the OPAC using transaction logs (1997)
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