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  • × subject_ss:"Reference books / Bibliography"
  • × theme_ss:"Informationsdienstleistungen"
  • × type_ss:"i"
  • × language_ss:"e"
  • × type_ss:"m"
  1. Katz, W.A.: Introduction to reference work : Vol.1: Basic information sources; vol.2: Reference services and reference processes (1992) 1.00
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