TY  - BOOK
AU  - FERRIS, JOHN
TI  - BEHIND THE ENIGMA: THE AUTHORIDES HISTORY OF GCHQ, BRITAIN'S SECRET CYBER-INTELLIGENCE AGENCY
SN  - 9781526605481
U1  - 327.1241 
PY  - 2021///
CY  - LONDON
PB  - BLOOMSBURY
N1  - 832
ER  -