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Bentley, S.; Kent, C.; LaGuardia, C.: Reference sources for the digital age (1995)
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Lawrence, J.R.M.: Outstanding reference sources : the 1997 selection of new titles (1998)
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Library resources on the Internet : strategies for selection and use (1992)
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Su, S.-F.; Lancaster, F.W.: Evaluation of expert systems in reference service applications (1995)
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Anderson, B.: Reference works from selected small alternative presses (1997)
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