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  • × subject_ss:"Online-Katalog / Kongress / Düsseldorf <1989> (HBZ)"
  1. ¬Der Online-Publikumskatalog der Universitätsbibliothek Düsseldorf : Methodische Erkenntnisse und Erfahrungen; OPAC-Kolloquium am 27.-28.11.1989 (1991) 9.50 
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    Information Retrieval (BVB)