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Gurstelle, William, author.
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Green, Charles, 1953- author.
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Gonnella, Rose, author.
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Davis, Gerald F. (Gerald Fredrick), 1961- author.
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Solomon, Erika, author.
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Gurstelle, William, author.
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United States. National Security Agency/Central Security Service. Center for Cryptologic History.
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Anderson, Paul N.
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Fender, Stephen.
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Benbow, Heather Merle.
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