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Zakaria, M.S.: Measuring typographical errors in online catalogs of academic libraries using Ballard's list : a case study from Egypt (2023)
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Tenopir, C.: Common end user errors (1997)
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Striedieck, S.: Online catalog maintenance : the OOPS command in LIAS (1985)
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Hunter, R.N.: Successes and failures of patrons searching the online catalog at a large academic library : a transaction log analysis (1991)
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Jong, M. de: "Bij worm had ik een keer de politiek eraan hangen" : bibliotheek Amstelveen enthousiast over Kid's Catalog (1998)
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