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Revelli, C.: ¬Le informazioni in biblioteca (1997)
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Edwin, A.; Fleming, D.: Reference and information services (1992)
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Guidelines for behavioral performance of reference and information service professionals (1996)
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Liu, L.-G.: ¬The Internet and library and information services : a review, analysis, and annotated bibliography (1995)
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Chowdhury, G.G.: Digital libraries and reference services : present and future (2002)
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