Kalima, Richard E <br/><br/>
Cryptology: Classical and modern with maplets 

 - Boca Raton  CRC Press  2012 
 - xiv, 541 p. 
<br/><br/> 1666 10/11/2014 KB279 10/11/2014 Mathematics (NBHM) 
<br/><br/><label>ISBN: </label> GBP51.99 
<br/><br/><label>Dewey Class. No.: </label>005.82 K125C