The secret life of Bletchley Park the WWII codebreaking centre and the men and women who worked there di McKay, Sinclair

Privacy on the line the politics of wiretapping and encryption di Diffie, Whitfield, Landau, Susan Eva

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Privacy on the line the politics of wiretapping and encryption di Diffie, Whitfield

Signals intelligence in the post-cold war era developments in the Asia-Pacific region di Ball, Desmond