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Focke, R.: Allgemeine Theorie der Klassifikation und kurzer Entwurf einer Instruktion für den Realkatalog (1905)
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Focke, R.: Grundlegung zu einer Theorie des systematischen Kataloges (1900)
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Dahlberg, I.: Einheitsklassifikation (1979)
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- Source
- Bestandserschließung und Bibliotheksstruktur: Rolf Kluth zum 10.2.1979. Hrsg.: R. Alsheimer
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Wellisch, H.H.: Organisatorische Neuordnung des DK-Systems (1971)
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- Source
- Nachrichten für Dokumentation. 22(1971), S.55-63
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Sveistrup, H.: ¬Der neue Realkatalog der SUB Hamburg (1947)
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- Source
- Probleme des Wiederaufbaus im wissenschaftlichen Bibliothekswesen: aus d. Verhandlungen des 1. Bibliothekartagung der britischen Zone in Hamburg vom 22.-24.10.1946