KIPPENHAHN Rudolf <br/><br/>
Code breaking:  a history and exploration 

 - London:  Constable,  1999 
 - 283p. 
<br/><br/> An introduction to the art of coding and code breaking from early times in history up to the advent of the Internet. 
<br/><br/><label>ISBN: </label>0094798907 (hbk.):  20.00 UK 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CRYPTOLOGY