Geheimschriften B 153.880 

S i n 9 h, Simon: The Code Book. The evolution of 
secrecy form Mary Queeen of SC8ts to Quantum 
Cryptography. (1. ed.) -New Y"rk [usw.l: 

• Doubleday (1999). XIII, 402 S. 8° 
ISBN 3-0-385-49531-5