The Six Unsolved Ciphers
Subtitle: Inside the Mysterious Codes That Have Confounded the World's Greatest Cryptographers
Publisher: Ulysses Press
Published: August 28, 2007
Language: eng
Format: Paperback
Number of pages: 312
ISBN-13: 9781569756287
Subjects: Military - Intelligence/Espionage; Military - Other; History / Military / Other; History; History - Military / War; Military