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Koch, F.: Vorschriften für den Schlagwortkatalog der National-Bibliothek in Wien (1924)
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- Geschichte des Schlagwortkataloges
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Füchsel, J.: Richtlinien für die Anlage von Schlagwortkatalogen (1927)
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- Geschichte des Schlagwortkataloges
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Wyss, W. von: Über den Schlagwortkatalog, mit Regeln für die Stadtbibliothek Zürich (1909)
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- Geschichte des Schlagwortkataloges