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  • × type_ss:"u"
  • × year_i:[1990 TO 2000}
  1. Umlauf, K.: Systematik im Umbruch : systematische Aufstellung, Präsentation und Reader Interest Classification in öffentlichen Bibliotheken (1996) 0.02 
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  2. Krüger, F.: Navigation und Orientierung in Hypertext : Ansätze für erfolgreiches Information Retrieval (1990) 0.01 
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