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  • × author_ss:"Gugelchuk, G.M."
  • × author_ss:"Murfin, M.E."
  • × theme_ss:"Informationsdienstleistungen"
  • × language_ss:"e"
  1. Murfin, M.E.; Gugelchuk, G.M.: Development and testing of a reference transaction assessment instrument (1987) 1.00 
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