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Rowley, J.: Current awareness in an electronic age (1998)
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Mardikian, J.; Kesselman, M.: Beyond the desk : enhanced reference staffing for the electronic library (1995)
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Summerhill, K.S.: ¬The high cost of reference : the need to reassess services and service delivery (1994)
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Smith, L.C.: Reference services (2009)
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DeSilva, S.M.: ¬A review of expert systems in library and information science (1997)
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