Dover (1956)

In Collection
#1694

Thorough, systematic introduction to serious cryptography, especially strong in modern forms of cipher solution used by experts. Nihilist, grille, U. S. Army, key-phrase, multiple-alphabet, Gronsfeld, Porta, Beaufort, periodic ciphers, and more. Simple and advanced methods. 166 specimens to solve — with solutions.

Product Details Format Paperback Cover Price $8.95 Nr of Pages 237 Height x Width 50 x 143 mm Original Publication Year 1939

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