by Langley, Andrew.
[ 01. English Non Fiction ] Series: Spies and spying Published by : Smart Apple Media, (Mankato, MN :) Physical details: 32 p. : col. ill. ; 30 cm. Subject(s): Cryptography --History. | Ciphers --History. Year : 2010
Item type :
01. English Non Fiction
| Location | Call Number | Status | Date Due |
|---|---|---|---|
| Westwood Primary School | 652 LAN | Available |
Includes index.
Sending secrets -- Ancient secrets -- Ciphers and plotters -- Mighty machines -- Purple and enigma cipher machines -- The code talkers -- Using codes today.