Pincock, Stephen.

Code breaker : the history of secret communication / Stephen Pincock and Mark Frary. - London : Random House, c2007. - 176 p. : ill., maps ; 23 cm.

Includes index.

9781905211548 (hbk.) 1905211546 (hbk.)

GBA688522 bnb

013578993 Uk


Cryptography--History.
Ciphers--History.



Frary, Mark.