Dudley, Underwood <br/><br/>
Elementary number theory/ 
Underwood Dudley. 
 - 2d ed., Dover ed. 
 - Mineola, NY:  Dover,  2008. 
 - ix, 249 p.:  ill.;  22 cm. 
<br/><br/> "This Dover edition, first published in 2008, is an unabridged republication of the second edition (1978) of the work originally published in 1969 by W. H. Freeman and Company, San Francisco." 
<br/><br/>Includes bibliographical references (p. 225-226) and index. 
<br/><br/><label>ISBN: </label>9780486469317 048646931X 
<br/><br/><label>LCCN: </label>2008023946 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory.
<br/><br/><label>Dewey Class. No.: </label>512.7  / D849e