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  • × year_i:[1980 TO 1990}
  1. Dewdney, A.K.: Chiffriermethoden von Caesar bis zur ENIGMA (1988) 10.09 
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    Author
    Dewdney, A.K.
  2. Dewdney, A.K.: Moderne Computer-Verschlüsselungsmethoden (1989) 10.09 
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