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  1. Reference and information services : an introduction (1991) 10.28
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  2. Reference and information services : an introduction (1995) 10.28
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  3. Sträter, H.: Beratungsinterviews : Praxis der Auskunft und Beratung in Bibliotheken und Informationsstellen (1991) 10.28
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    Bib A 591 / Auskunft