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  • × theme_ss:"OPAC"
  1. Ayres, F.H.; Nielsen, L.P.S.; Ridley, M.J.: ¬The Bradford OPAC2 : Managing and displaying retrievals from a distributed search in Z39.50 (1998) 10.32 
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  2. Ayres, F.H.; Ridley, M.J.: BOPAC2 : a new dimension in OPAC display (1999) 10.32 
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  3. Ayres, F.H.; Nielsen, L.P.S.; Ridley, M.J.: BOPAC2 : a new concept in OPAC design and bibliographic control (1999) 10.32 
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