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Mas, M.T.: CD-ROM end users in the university library : what to do? (1994)
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Harnack, A. von: ¬Die Auskunftserteilung als bibliothekarische Aufgabe (1940)
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Scholle, U.: Kann ich Ihnen behilflich sein? : Erhebung am zentralen Auskunftsplatz der ULB Münster (2000)
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