TY  - BOOK
AU  - Gilbert, Adrian
TI  - Codes and ciphers
SN  - 9781595665942
AV  - M 652.8 G54 2008
PY  - 2008///
CY  - London
PB  - QED
KW  - Ciphers --Juvenile literature
KW  - Cryptography --Juvenile literature
N1  - Contents: Codes and ciphers -- The Caesar cipher -- Code breaking -- Morse code -- Visual codes -- Navajo code talkers -- One-time pads -- Cipher machines -- Purple intelligence -- Enigma -- Secret writing -- Microdots -- Radio communications.   Notes: Includes index
N2  - "Discusses the difference between codes and ciphers, common codes and ciphers that have been used during wars, and how to create simple ciphers"--Provided by publisher
ER  -