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  • × language_ss:"d"
  • × theme_ss:"Informationsmittel"
  • × year_i:[1990 TO 2000}
  1. Handbuch der Datenbanken für Naturwissenschaft und Technik, Patente (1994) 6.68 
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  2. Geiß, D.: Neues aus der Patentinformation (1999) 6.68 
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