TY  - BOOK
AU  - Hastings,Max
TI  - The secret war: spies, ciphers and guerrillas 1939-45
SN  - 9780007503742
U1  - 940.5486 
PY  - 2015///
CY  - London
PB  - William Collins
KW  - Spies
KW  - History
KW  - World War, 1939-1945
KW  - Electronic intelligence
KW  - Secret service
KW  - Cryptography
ER  -