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Schmidt, A.F.: Vorschläge für eine partielle Modifikation der Dezimalklassifikation - dargestellt im Rahmen einer Kurzbeschreibung der DK (1987)
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Schmidt, R.: Sachkatalogisierung nach den Regeln für den Schlagwortkatalog (RSWK) aus der Sicht eines bayerischen Fachreferenten (1990)
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Schmidt, S.: Anmerkungen zur Aufstellung und Erschließung von Beständen in Öffentlichen Bibliotheken und in Hochschulbibliotheken (1987)
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Schmidt, P.: Über die Gestaltung des Schlagwortkatalogs der Universitätsbibliothek in Basel (1942)
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Schmidt, P.: Über den Basler Schlagwortkatalog (1952)
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Umlauf, K.: Klassifikationen in Öffentlichen Bibliotheken (2018)
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Kolbe, C.: Kritischer Vergleich der Klassifikation der Stadtbibliotheken Bielefeld, Duisburg und Hannover (1973)
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Veyssière, C.: ¬Die Klassifikationen der Stadtbibliotheken Bochum und Duisburg : eine vergleichende Untersuchung zweier ASB-Varianten (1983)
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Dost, C.: ¬Der Informationsdienst im System der Stadtbibliotheken Duisburg und Köln : eine vergleichende Untersuchung der Konzeptionen und der Informationsbestände (1985)
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Wissensorganisation und Verantwortung : Gesellschaftliche, ökonomische und technische Aspekte. Proceedings der 9. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation Duisburg, 5.-7. November 2004 (2006)
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