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Gurstein, M.: Community informatics : enabling communities with information and communication technologies (2000)
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Härkönen, S.: Digital Reference Konsortien : Kooperative Online-Auskunft in Bibliotheken (2007)
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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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