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Keller, A.: Retrospektive Digitalisierung von Zeitschriften (2000)
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Keller, A.: Bibliotheksservice-Zentrum Baden-Württemberg (BSZ) (2001)
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Keller, A.: Elektronische Zeitschriften : Eine Einführung (2001)
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Keller, A.: Elektronische Zeitschriften im Wandel : Eine Delphi-Studie (2001)
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