Mel, H.X. Baker, Doris, jt.auth <br/><br/>
Cryptography decrypted 

 - Boston  Addison-Wesley  2000 
 - xx, 352p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Cryptography
<br/><br/><label>Dewey Class. No.: </label>652.8  / M53C