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Edwin, A.; Fleming, D.: Reference and information services (1992)
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Nicholls, P.; Sutherland, T.: CD-ROM databases : a survey of commercial publishing activity (1992)
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Shaw, D.: Challenges of information technology in improving information services (1997)
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Archdale, G.H.: Tourism information services in the electronic age : worldwide trends and developments (1994)
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Butterworth, M.: Online searching and CD-ROM in Britsh schools (1992)
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