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  • × year_i:[1980 TO 1990}
  • × type_ss:"i"
  1. Brockhaus-Enzyklopädie (1986-1994) 4.47 
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  2. Bertelsmann-Lexikodisc : das Wissen der Welt auf CD-ROM (1989) 4.47 
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  3. Informationsdienst an Öffentlichen Bibliotheken der Bundesrepublik Deutschland (1986) 4.47 
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