Author:Bowers, William Maxwell

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Digraphic substitution: The Playfair cipher, the four square cipher (Practical cryptanalysis)

By: Bowers, William Maxwell

Price: $63.79

Publisher: American Cryptogram Association: 1959

Seller ID: 101669

ISBN: B0007EYV18

Binding: Paperback

Condition: Good+


Digraphic substitution: The Playfair cipher, the four square cipher (Practical cryptanalysis)

By: Bowers, William Maxwell

Price: $68.40

Publisher: American Cryptogram Association: 1960

Edition: First Edition. 1st Printing.

Seller ID: 115472

ISBN: B0007EYV18

Binding: Paperback

Condition: Fine