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  • × theme_ss:"Informationsdienstleistungen"
  • × theme_ss:"Informationsmittel"
  • × type_ss:"a"
  1. Tenopir, C.; Ennis, L.: ¬The digital reference work of academic libraries (1998) 0.07 
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    Source
    Online. 22(1998) no.4, S.22-28
  2. Rosen, J.; Dickstein, R.; Greenfield, L.: Using the World Wide Web at the reference desk (1998) 0.03 
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