Unravelling enigma : winning the code war at Station X /

FREEDMAN Maurice

Unravelling enigma : winning the code war at Station X / Maurice Freedman. - Barnsley UK : Pen & Sword, 2001. - vii, 190 p. : ill.

080528100 (pbk) : 46.00 SGD


SECOND WORLD WAR--SIGNALS INTELLIGENCE
BLETCHLEY PARK
ENIGMA PROJECT
CODE BREAKING