Mckay, Sinclair, - Hidden History of Code Breaking: The Secret World of Cyphers, Uncrackable Codes, and Elusive Encryptions.

New York, Pegasus Books, 2023. 1st Printing. Hardcover., Vg (See Description), Vg/Vg Pages Clean, Binding Tight. Dj in Mylar Wrap. Pages: 391.

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