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- catalog contributor b8475362.
- catalog created "[1937]".
- catalog date "1937".
- catalog date "[1937]".
- catalog dateCopyrighted "[1937]".
- catalog extent "[1]-4p.".
- catalog issued "1937".
- catalog issued "[1937]".
- catalog language "eng".
- catalog publisher "[New York] The Encyclopedia Americana".
- catalog subject "Ciphers.".
- catalog subject "Cryptography.".
- catalog title "Cipher writing.".
- catalog type "text".