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  • × author_ss:"Langfeldt, J."
  • × theme_ss:"Geschichte des Schlagwortkataloges"
  1. Langfeldt, J.: Über den Schlagwortkatalog der belehrenden Literatur (1930) 0.00 
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    Source
    Bücherei und Bildungspflege. 10(1930), S.307-323