1-5 of 5 Books
Cryptology
By Richard E. Klima
Data-driven block ciphers for fast telecommunication systems
By Nick Moldovyan,Nikolai Moldovyan,Alexander A. Moldovyan
Usborne LA Guia Del Espia
By Lesley Sims
Los Cdigos Secretos
By Didier Muller
Two essays
By James Orchard Halliwell-Phillipps