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  • × language_ss:"e"
  • × theme_ss:"Informationsdienstleistungen"
  • × theme_ss:"Informationsmittel"
  • × year_i:[1990 TO 2000}
  1. Tenopir, C.; Ennis, L.: ¬The digital reference work of academic libraries (1998) 0.02
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    Source
    Online. 22(1998) no.4, S.22-28
  2. Katz, W.A.: Introduction to reference work : Vol.1: Basic information sources; vol.2: Reference services and reference processes (1992) 0.00
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    Type
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