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  • × theme_ss:"Informationsdienstleistungen"
  1. Kesselman, M.; Watstein, S.B.: ¬The measurement of reference and information service (1987) 10.31 
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    Kesselman, M.
  2. Mardikian, J.; Kesselman, M.: Beyond the desk : enhanced reference staffing for the electronic library (1995) 10.31 
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