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Lochore, S.: How good are the free digital reference services? : a comparison of library-based and expert services (2004)
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- Library review. 53(2004) no.1, S.24-29
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Quint, B.: Round the clock, round the world : delivering quality affordable data 24 hours a day will take us into the future (1998)
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- 22. 2.1999 18:08:25
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Kasperek, G.: Recherchieren - auch mal mit dem Mut zur Lücke : Literaturbezogene Arbeitsweisen bei Naturwissenschaftlern am Beispiel der Biologie (2009)
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- 22. 7.2009 13:41:12
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Härkönen, S.: Digital Reference Konsortien : Kooperative Online-Auskunft in Bibliotheken (2007)
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- 22. 8.2009 19:50:27
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Günther, S.: Aufbruch in den virtuellen Raum : Anleitung zum Aufbau eines Web Contact Centers (2005)
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- 22. 9.2005 20:50:31
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Hirko, B.; Ross, M.B.: Virtual reference training : the complete guide to providing anytime anywhere answers (2004)
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Lipow, A.G.: ¬The virtual reference librarian's handbook (2003)
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