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Brauner, D.J.; Raible-Besten, R.; Weigert, M.M.: Internet-Lexikon (1997)
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Steinmetz, R.: Elektronisches Lexikon auf Personalcomputer (1989)
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Sittek, D.: ¬Das Internet-Lexikon (1997)
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Bertelsmann Lexikon Tiere (1994)
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Bertelsmann Lexikon Geschichte (1996)
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