Dudley, Underwood <br/><br/>
Elementary number theory /  
Underwood Dudley 
 - San Francisco :    Freeman,    1969 
 - ix, 262 p. :    ill. ;    24 cm. 
 - A series of books in mathematics .
<br/><br/>Includes bibliographical references (p. 187-189) and index 
<br/><br/><label>ISBN: </label>0716704382 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Number theory
<br/><br/><label>Dewey Class. No.: </label>512.7