The Codebreakers: The Comprehensive History of Secret Communication From Ancient Times to the Internet
Published by: SCRIBNER BOOK COMPANY Author: Kahn, D Number of pages: 1172 Group: SECURITY & ENCRYPTION ISBN: 0684831309/9780684831305 User level: Beginner/Intermediate Objective: Reference Date Published: January 1997 RRP £50.00Save34% Our Price £33.00
Biting the hand that feeds IT 
Published by: SCRIBNER BOOK COMPANY