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  • × author_ss:"Koopman, R."
  1. Koopman, R.: ¬Ein OPAC mit Gewichtungsalgorithmen : Der PICA Micro OPC (1996) 0.01 
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    Imprint
    Düsseldorf : Universitäts- und Landesbibliothek
    Series
    Schriften der Universitäts- und Landesbibliothek Düsseldorf; Bd.25
  2. Koopman, R.: ¬The Pica Micro OPC (1995) 0.01 
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    Imprint
    Oldenburg : Bibliotheks- und Informationssystem
    Source
    Aufbau und Erschließung begrifflicher Datenbanken: Beiträge zur bibliothekarischen Klassifikation. Eine Auswahl von Vorträgen der Jahrestagungen 1993 (Kaiserslautern) und 1994 (Oldenburg) der Gesellschaft für Klassifikation. Hrsg.: H. Havekost u. H.-J. Wätjen

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