TY  - BOOK
AU  - Gannon,Paul
TI  - Colossus: Bletchley Park's greatest secret 
SN  - 9781843543312
U1  - 940.548641 22
PY  - 2006///
CY  - London
PB  - Atlantic
KW  - World War, 1939-1945
KW  - Cryptography
KW  - Lorenz cipher system
KW  - Electronic intelligence
KW  - Great Britain
KW  - Computers
KW  - History
KW  - Bletchley Park (Milton Keynes, England)
ER  -