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| 005 | 20251022063918.0 | ||
| 008 | 251022s9999||||xx |||||||||||||| ||und|| | ||
| 020 | _a978-1-5266-0547-4 | ||
| 035 | _a2946 | ||
| 100 | _aJohn Ferris | ||
| 245 | 0 | _aBehind the Enigma The Authorisd History of GCHQ Britains Secret Cyber-Intelligence Agency | |
| 260 | _bBloomsbury Publishing | ||
| 650 | _aC-04:Inspiration | ||
| 942 | _cBK | ||
| 999 |
_c6432 _d6432 |
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