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Bittner, E.: Auskunfts- und Informationssysteme in Datex-J (1994)
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Wein, Weib, Gesang und vieles mehr (1995)
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Buchen Sie doch einfach selbst (1995)
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Und sonst ... (1995)
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Neumann, G.: Online-Recherchen in der Schulbibliothek : Btx als Umwelt-Informationsquelle (1995)
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Mahnkopf, P.: Endkundensysteme in T-Online, Datex-J, Btx (1997)
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