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classification_ss:"ST 270 (BVB)"
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classification_ss:"ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme"
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Gebhardt, F.: Dokumentationssysteme (1981)
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