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  1. Koch, F.: Zur Frage des Schlagwortkatalogs (1927) 10.27
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    Author
    Koch, F.
  2. Koch, F.: Noch einmal Schlagwortkatalog (1926) 10.27
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    Author
    Koch, F.
  3. Koch, F.: Vorschriften für den Schlagwortkatalog der National-Bibliothek in Wien (1924) 10.27
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    Koch, F.