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1
It wasn't all magic : the early struggle to automate cryptanalysis, 1930s-1960s /
Published 2002Subjects: “…Cryptography United States Automation History.…”
Online Access
Online Access
Government Document eBook -
2
The secret in Building 26 : the untold story of America's ultra war against the U-boat Enigma codes /
Published 2004Subjects:Book