Klima, Richard E.	 <br/><br/>
Cryptology : classical and modern with maplets / 
Klima, Richard E.	 
 - Boca Raton,  CRC Press,  2012	 
 - xiv, 541 p. : 
<br/><br/><label>ISBN: </label>9781439872413 
<br/><br/><label>Subjects--Index Terms: </label>Cryptology 
<br/><br/><label>Universal Decimal Class. No.: </label>681.188 KLI  / KLI