Andreassen.K. <br/><br/>
Computer Cryptology:Beyond Decoder Rings. 

 - 1st Ed. 
 -  Prentice Hall of India Private Limited  1988 
 - XV , 268p.  23 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>ELN
<br/><br/><label>Index Terms--Genre/Form: </label><br/>F-02
<br/><br/><label>Dewey Class. No.: </label>652.8  / AND