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  • × theme_ss:"Klassifikationssysteme"
  • × year_i:[1940 TO 1950}
  1. Bliss, H.E.: ¬A bibliographic classification (1940-53) 0.04 
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  2. Systematik und Index des Realkataloges der Stadtbücherei Bochum : Entwurf (1948) 0.01 
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