TY  - BOOK
AU  - Singh, Simon
ED  - 
TI  - Code book: Secret History of Codes and Codebreaking
SN  - 1857028899
U1  - 327.12 Sin/Cod 
PY  - 2000///
CY  - London
PB  - Fourth Estate
KW  - Crime detection
KW  - Cryptography
KW  - Ciphers
N1  - B, Index
ER  -