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Handbuch der Informationswirtschaft : Firmen, Produkte, Dienstleistungen (1994)
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Library resources on the Internet : strategies for selection and use (1992)
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Informationsdienst an Öffentlichen Bibliotheken der Bundesrepublik Deutschland (1986)
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Katz, W.A.: Introduction to reference work : Vol.1: Basic information sources; vol.2: Reference services and reference processes (1992)
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