Cryptology yesterday, today and tomorrow / 
Cipher A. Deavours ... [et al.] 
 - Norwood, Mass. :  Artech House,  1987 
 - xi, 519 p. :  ill. ;  24 cm. 
<br/><br/> Continued by : Cryptology, machines, history, and methods 
<br/><br/><label>ISBN: </label>0890062536  RM110.00 
<br/><br/><label>LCCN: </label>87-14396 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography<br/>Ciphers