Deavours, Ciphes A. [et al] <br/><br/>
Cryptology yesterday, today and tomorrow   
by Ciphes A. Deavours and [et al]. 
 - Norwood  Artech house Inc.  1987 
 - xi, 519p. 
<br/><br/><label>ISBN: </label>0890062536 
<br/><br/><label>Dewey Class. No.: </label>652.8  / N87