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Alex, H.; Heiner-Freiling, M.: DDC-Sachgruppen der Deutschen Naitonalbibliografie : Leitfaden zu ihrer Vergabe (2003)
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Schneider, G; Nestler, F.: Einführung in die Bibliographie (2005)
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Weilenmann, A.-K.: Fachspezifische Internetrecherche : für Bibliothekare, Informationsspezialisten und Wissenschaftler (2001)
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