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  1. Heydrich, J.: Bibliographie der Bibliographien für Leitbibliotheken (1981) 10.09 
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  2. Heydrich, J.: Stellungnahme der Kommission für Zentralkatalogfragen der AfB des DBV zu den vorläufigen Empfehlungen der DFG - Arbeitsgruppe Leihverkehr (1976) 10.09 
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  3. Heydrich, J.; Schmelter, G.: Einsatz von Retrieval-Geräten bei Microfiche-Arbeiten in Zentralkatalogen und Bibliotheken (1982) 10.09 
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  4. Heydrich, J.: ¬Die Rolle der Zentralkataloge als Leihverkehrszentralen : Heute und Morgen (1997) 10.09 
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