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- catalog contributor b8874425.
- catalog contributor b8874426.
- catalog contributor b8874427.
- catalog created "[1942]".
- catalog date "1942".
- catalog date "[1942]".
- catalog dateCopyrighted "[1942]".
- catalog extent "282 p., 3 ℓ.".
- catalog issued "1942".
- catalog issued "[1942]".
- catalog language "eng".
- catalog publisher "Garden City, N.Y. Blue Ribbon Books".
- catalog subject "Ciphers.".
- catalog subject "Cryptography.".
- catalog title "Secret and urgent; the story of codes and ciphers.".
- catalog type "text".