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Vorstius, J.: ¬Die Katalogprobleme im Spiegel der ausländischen Fachliteratur seit 1930 (1933)
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Trebst, H.: Studien zu einer analytischen Sachkatalogisierung (1931)
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¬Die Kataloge der größeren Bibliotheken des deutschen Sprachgebietes : Ergebnisse einer Umfrage des 'Ausschusses für Sachkatalogisierung' vom 1.9.1933 (1935)
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