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Horner, J.; Michaud-Oystryk, N.: ¬The efficiency and success rates of print ready references vs online redy reference searches in Canadian University Libraries (1995)
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Rosen, J.; Snow, C.E.: Internet resources for ready reference (1997)
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Cloughley, K.: Digital reference services : how do the library-based services compare with the expert services? (2004)
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Tenopir, C.; Neufang, R.: Electronic reference options : how they stack up in research libraries (1992)
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Bates, M.E.: Gale's Ready Reference Shelf on CD-ROM : CD-ROM review (1997)
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