Mollin, Richard A.,  1947- <br/><br/>
Codes:  the guide to secrecy from ancient to modern times/ 
Richard A. Mollin. 
 - Boca Raton:  Chapman & Hall/CRC,  2005. 
 - xx, 678 p.:  ill.;  24 cm. 
<br/><br/>Includes bibliographical references (p. 605-626) and index. 
<br/><br/><label>ISBN: </label>1584884703 (alk. paper) 9781584884705 (alk. paper) 9781420035087 1420035088 
<br/><br/><label>LCCN: </label>2005041403 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer security.<br/>Data encryption (Computer science)
<br/><br/><label>Dewey Class. No.: </label>005.82  / M726c