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Ecker, J.: ¬Die Optimierung der sowjetischen Bibliothekarisch-Bibliographischen Klassifikation (1982)
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Ecker, R.: DOI-Workshop in Luxemburg (1998)
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Ecker, R.: ¬Das digitale Buch im Internet : Methoden der Erfassung, Aufbereitung und Bereitstellung (1998)
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Ecker, R.: European Copyright User Platform, ECUP und ECUP+ (1997)
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Ecker, R.: Schnelle Dokumentenlieferung mit FastDoc (2000)
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Samurin, E.I.: Geschichte der bibliothekarisch-bibliographischen Klassifikation (1977)
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BBK/A. Bibliothekarisch-bibliographische Klassifikation. Adaptierte Fassung (1983 ff.)
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Ecker, J.: ¬Die Optimierung der sowjetischen Bibliothekarisch-Bibliographischen Klassifikation (1982)
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Bibliothekarisch-bibliographische Klassifikation. Tafeln für wissenschaftliche Bibliotheken (1967 ff.)
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Schulz, H.: BBK/A: Bibliothekarisch-bibliographische Klassifikation. Adaptierte Fassung. Werbeschrift (1987)
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