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  • × theme_ss:"OPAC"
  1. Ensor, P.: User characteristics of keyword searching in an OPAC (1992) 10.09 
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  2. Ensor, P.: User practices in keyword and Boolean searching on an online public access catalog (1992) 10.09 
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  3. Wiberley, S.E.; Daugherty, R.A.; Danowski, J.A.: User persistence in displaying online catalog postings : LUIS (1995) 10.09 
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