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Katz, W.A.: Introduction to reference work : Vol.1: Basic information sources; vol.2: Reference services and reference processes (1992) 9.39

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Lcsh: Reference services (Libraries)
Subject: Reference services (Libraries)

Reference and information services : an introduction (2001) 9.39

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Lcsh: Reference services (Libraries)
Subject: Reference services (Libraries)

Reference and information services : an introduction (1995) 9.39

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Lcsh: Reference services (Libraries)
Subject: Reference services (Libraries)

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