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Broske, J.M. de: Electronic reference : the school library revolution (1991)
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Cibbarelli, P.R.; Gertel, E.H.; Kratzert, M.: Choosing among the options for patron access databases : print, online, CD-ROM, or locally mounted (1993)
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Bailey, C.W.: ¬The intelligent reference information system project : a merger of CD-ROM LAN and expert system technology (1992)
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Tenopir, C.; Ennis, L.: ¬The digital reference work of academic libraries (1998)
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