Thirty secret years : A.G. Denniston's work in signals intelligence, 1914-1944 /

Bibliographic Details
Main Author:	Denniston, Robin
Format:	Book
Language:	English
Published:	Clifton-upon-Teme : Polperro Heritage, 2007.
Subjects:	Denniston, Alastair. Cryptographers > Scotland > Biography. Secret service > Officials and employees > Great Britain > Biography. World War, 1914-1918 > Secret service > Great Britain. World War, 1939-1945 > Secret service > Great Britain.

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