Singh, Simon
Code book Secret History of Codes and Codebreaking - - London Fourth Estate 2000 - xiii,402pgs.;19.3cms.
B, Index
1857028899
Crime detection
Cryptography
Ciphers
327.12 Sin/Cod
Code book Secret History of Codes and Codebreaking - - London Fourth Estate 2000 - xiii,402pgs.;19.3cms.
B, Index
1857028899
Crime detection
Cryptography
Ciphers
327.12 Sin/Cod