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  • × author_ss:"Koopman, R."
  • × theme_ss:"OPAC"
  1. Koopman, R.: ¬Ein OPAC mit Gewichtungsalgorithmen : Der PICA Micro OPC (1996) 0.04 
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    Source
    Zukunft der Sacherschließung im OPAC: Vorträge des 2. Düsseldorfer OPAC-Kolloquiums am 21. Juni 1995. Hrsg.: E. Niggemann u. K. Lepsky
  2. Koopman, R.: ¬The Pica Micro OPC (1995) 0.03 
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    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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