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  • × theme_ss:"OPAC"
  1. Ashton, J.: ¬The British Library Network OPAC (1994) 9.76 
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  2. Ashton, J.: Development of the British Library's OPAC 97 : the value of a user-centred approach (1998) 9.76 
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  3. Ashton, J.: ONE: the final OPAC frontier (1998) 9.76 
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