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Nissen, C.: ¬Der Mainzer Sachkatalog in Theorie und Praxis (1937)
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Gödel, K.: Über formal unentscheidbare Sätze der Principia Mathematica und verwandter Systeme, I (1931)
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Rang, B.: Zur Frage der Systematik und der Neuordnung der systematischen Kataloge (1939)
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Hofmann, H.: Beiträge zur Sachkatalogisierung (1938)
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Vorstius, J.: Kritische Gedanken über den neuesten Beitrag zur Kataloggeschichte und Kataloglehre (1934)
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Escher, H.: ¬Der Schlagwortkatalog der Stadtbibliothek Zürich (1890) (1937)
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