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Bauhuis, W.: ¬Der Schlagwortkatalog als zweiter Sachkatalog (1943)
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- Geschichte des Schlagwortkataloges
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Schmidt, P.: Über die Gestaltung des Schlagwortkatalogs der Universitätsbibliothek in Basel (1942)
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- Geschichte des Schlagwortkataloges
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Pettee, J.: Subject headings: the history and theory of the alphabetical subject approach to books (1946)
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- Theme
- Geschichte des Schlagwortkataloges