BIBLIOGRAPHY

J. V. Boone. A Brief History of Cryptology. Naval Institute Press. 2005. 192pp.

David Kahn. The Codebreakers: The Story of Secret Writing. Macmillan. 1967. 1164pp.

Leo Marks. Between Silk and Cyanide: A Codemaker's War, 1941-1945. Simon and Schuster. 2000. 624pp.

Richard A. Mollin. Codes: The Guide to Secrecy from Ancient to Modern Times. CRC Press. 2005. 679pp.

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