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Ansari, M.A.A.: Awareness and use of OPACs in five Delhi libraries (2008)
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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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Ramesh Babu, B.; Tamizhchelvan, M.: ¬An investigation into the features of OPACs in Tamil Nadu (India) (2003)
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Kilgour, F.G.: Redesign of known-item online access catalogs (1994)
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Zorn, M.J.; Marshall, L.: Graphical user interfaces and library systems : end user reactions (1995)
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