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Larson, C.A.: ¬The electronic library and reference (1994)
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Lapp, E.: Information services and user training in the electronic library (1996)
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Kimmel, S.: WWW search tools in reference services (1997)
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Duckett, B.: From reference library to information service : services in danger (2004)
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Moore, A.: As I sit studying : WWW-based reference services (1998)
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