BECKETT B. <br/><br/>
INTRODUCTION TO CRYPTOLOGY 

 -  LONDON : BLACKWELL  1988 
 - 343 p. 
<br/><br/><label>ISBN: </label>0000632018364 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DATA SECURITY
<br/><br/><label>Dewey Class. No.: </label>005.8  / B21