Spy codes and ciphers
5.0 · 1 votos
"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.
5.0 · 1 votos
"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.
Enslow Publishers · inglés · ISBN 9780766037090
