Annotations for Spy Codes and Ciphers


Baker & Taylor
"Discusses different methods of secret communications used by spies, such as Morse code, the Enigma machine, the Najavo language, and digital steganography, and includes career information"--Provided by publisher.

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Baker & Taylor
Discusses different methods of secret communications used by spies, such as Morse code, the Enigma machine, the Najavo language, and digital steganography, and includes career information.

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