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Ramesh Babu, B.; Tamizhchelvan, M.: ¬An investigation into the features of OPACs in Tamil Nadu (India) (2003)
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Thompson, D.M.: Online public access catalogs and user instruction (1994)
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Crawford, J.C.; Thom, L.C.; Powles, J.A.: ¬A survey of subject access to academic library catalogues in Great Britain (1993)
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Wood, A.J.: OPACs in public libraries : some results of a survey (1989)
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Wood, A.J.: OPACs in public libraries : a second look (1989)
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