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Lehmann, O.; Lehmann, A.: Top-Platzierungen in Suchmaschinen (2002)
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Lehmann, K.: Zu ausgewählten Problemen der neuen Gliederung der Hauptgruppe R Belletristik : Hinweise und Titel (1984)
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Lehmann, K.: ¬Die Klassifikation für Allgemeinbibliotheken (KAB) (1992)
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Lehmann, K.: Einzelfragen der Überarbeitung der KAB/E (1991)
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Lehmann, K.: Zur Klassifizierung von Darstellungen über einzelne Familien (1991)
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Kröger, E. (Bearb.): Systematik der Stadtbibliothek Duisburg (2001)
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Heckmann, R.: "Systematik der Stadtbibliothek Duisburg" : Ausgabe 2001 veröffentlicht (2001)
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SWI: Schlagwortindex zu Systematik für Bibliotheken (SfB), Allgemeine Systematik für Öffentliche Bibliotheken (ASB), Systematik Stadtbibliothek Duisburg (SSD). T.1-2 (1986-1990)
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Systematik der Stadtbibliothek Bremen (1973)
0.98
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Holler, U.: ¬Die Organisation der Informationsarbeit bei der Stadtbibliothek Duisburg (1984)
0.94
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