Lewand, Robert. <br/><br/>
Cryptological mathematics/ 
Robert Edward Lewand. 
 - Washington, DC:  Mathematical Society of America,  c2000. 
 - xiv, 199 p.:  ill.;  26 cm. 
 - Classroom resource materials .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0883857197 
<br/><br/><label>LCCN: </label>00010526 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography.<br/>Cryptography---Problems, exercises, etc.<br/>Number theory.<br/>Cryptographie.<br/>Cryptographie.<br/>Nombres, Théorie des.
<br/><br/><label>Dewey Class. No.: </label>003.54  / L669c