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Härkönen, S.: Digital Reference Konsortien : Kooperative Online-Auskunft in Bibliotheken (2007)
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Günther, S.: Aufbruch in den virtuellen Raum : Anleitung zum Aufbau eines Web Contact Centers (2005)
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Windrath, M.: Auf der Suche nach der richtigen Antwort : Von der Bücherrallye bis zur Web-Recherche: Neuer Schulservice der Stadtbibliothek boomt (2006)
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Lipow, A.G.: ¬The virtual reference librarian's handbook (2003)
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