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  • × author_ss:"Niggemann, E."
  • × theme_ss:"Klassifikationssysteme im Online-Retrieval"
  1. Niggemann, E.: RSWK oder was sonst? Sacherschließung für den Online-Publikumskatalog der Universitätsbibliothek Düsseldorf - ein Werkstattbericht (1991) 0.01 
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