Dudley, Underwood <br/><br/>
Elementary number theory 
Underwood Dudley 
 - 2d ed., Dover ed 
 - Mineola, NY  Dover Publications  2008 
 - ix, 249 p. : ill. ; 22 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780486469317 
<br/><br/><label>ISSN: </label>2008023946 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory
<br/><br/><label>Dewey Class. No.: </label>512.72 DUD