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Tenopir, C.; Neufang, R.: Electronic reference options : how they stack up in research libraries (1992) 0.02

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Source: Online. 16(1992) no.2, S.22-28

Tenopir, C.; Neufang, R.: ¬The impact of electronic reference on reference librarians (1992) 0.00

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Source: Online. 16(1992) no.3, S.54-56,58,60