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Keitz, W. von; Fisahn, S.: Erste deutsche CDS/ISIS-Nutzertagung in Eschborn (1998) 0.03

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Keitz, S. von; Keitz, W. von; Gerlach, H.: Modernes Online-Retrieval : der Weg zu den Wissensspeichern der Welt am Beispiel der DIALOG-Datenbanken (1993) 0.03

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Keitz, S. von; Keitz, W. von; Gerlach, H.: Grundfunktionen des Informationen Retrieval (1993) 0.03

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Keitz, W. von: Telekommunikationsdienste : eine Datenbank gibt Auskunft (1993) 0.02

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Keitz, W. von: Documentazione internazionale con CDS/ISIS : un progetto della University of Library and Information Studies di Stoccarda (1995) 0.01

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