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  1. Pretzsch, J.: ¬Der OPAC des Deutschen Patentamts und seine sachlichen Zugriffsmöglichkeiten : Sacherschließung des Buchbestandes der Bibliothek (1988) 10.60 
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  2. Pretzsch, J.: ¬Der EDV-Katalog der Bibliothek des Deutsches Patentamts (1985) 10.60 
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