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Digital fortress

Brown, Dan, 1964-2009
Books
When the National Security Agency's code-breaking machine encounters a code it cannot decipher, the agency calls in Susan Fletcher, its head cryptographer. She discovers that the agency is being held to ransom with a code so complex that, if it was released, it would cripple U.S. intelligence.
Main title:
Digital fortress / Dan Brown.
Imprint:
London : Corgi, 2009.
Collation:
510 p. ; 20 cm.
Notes:
Originally published: New York: St. Martins, 1998; London: Corgi, 2004.
ISBN:
9780552159739 (pbk)0552159735 (pbk)
Language:
English
BRN:
646271
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