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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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Molitor, K.: Zu den Vorschlägen betreffend einheitlichen Zetteldruck I (1905)
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- Source
- Zentralblatt für Bibliothekswesen. 22(1905), S.129-135