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- catalog alternative "SIGSALY".
- catalog contributor b13021616.
- catalog contributor b13021617.
- catalog contributor b13021618.
- catalog created "2000]".
- catalog date "2000".
- catalog date "2000]".
- catalog dateCopyrighted "2000]".
- catalog description "Includes bibliographical references.".
- catalog extent "19 p. :".
- catalog hasFormat "Also available via Internet from the NSA Web site. Address as of 10-29-02: http://www.nsa.gov/wwii/papers/start%5Fof%5Fdigital%5Frevolution.htm; current access is available via PURL.".
- catalog isFormatOf "Also available via Internet from the NSA Web site. Address as of 10-29-02: http://www.nsa.gov/wwii/papers/start%5Fof%5Fdigital%5Frevolution.htm; current access is available via PURL.".
- catalog issued "2000".
- catalog issued "2000]".
- catalog language "eng".
- catalog publisher "[Fort George G. Meade, Md. : Center for Cryptologic History, National Security Agency,".
- catalog relation "Also available via Internet from the NSA Web site. Address as of 10-29-02: http://www.nsa.gov/wwii/papers/start%5Fof%5Fdigital%5Frevolution.htm; current access is available via PURL.".
- catalog subject "Digital communications History.".
- catalog subject "World War, 1939-1945 Communications.".
- catalog subject "World War, 1939-1945 Cryptography.".
- catalog title "SIGSALY".
- catalog title "The start of the digital revolution, SIGSALY [microform] : secure digital voice communications in World War II.".
- catalog type "text".