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Bock, F.: Zur Geschichte des Schlagwortkatalogs in Praxis und Theorie (1923)
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Ringshausen, H.: Vom Schlagwortkatalog zum Schlag-Stichwortkatalog (1973/74)
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- Source
- DFW. 22(1973/74), S.41-42
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Björkbom, C.: ¬Der Schlagwortkatalog der Königlichen Bibliothek in Stockholm (1932)
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