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  • × subject_ss:"Online-Katalog / Kongress / Düsseldorf «1989» (BVB)"
  1. ¬Der Online-Publikumskatalog der Universitätsbibliothek Düsseldorf : Methodische Erkenntnisse und Erfahrungen; OPAC-Kolloquium am 27.-28.11.1989 (1991) 4.54 
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