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  • × year_i:[1990 TO 2000}
  1. Geiß, D.: Recherchetechniken in Patentinformationsnetzen, dargestellt am Beispiel des CD-ROM Kommunikationsnetzes des Informationszentrums Technik und Patente der Universitätsbibliothek Dortmund (1996) 8.18 
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  2. Geiß, D.: Neues aus der Patentinformation (1999) 8.18 
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