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Aghemo, A.: ¬Le risorse informative elettroniche (1995)
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Song, S.-f.: Rethinking of the development of reference service (1997)
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Lanier, D.; Wilkins, W.: Ready reference via the Internet (1994)
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Gessesse, K.: Scientific communication, electronic access and document delivery : the new challenge to the science/engineering reference librarian (1994)
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