Dudley, Underwood  x <br/><br/>
Elementary number theory  x 

 - x 
 - W.H. Freeman  San Francisco  1969 
 - vi, 262 
<br/><br/>x 
<br/><br/><label>ISBN: </label>x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numbers, Theory of Numbers, Theory of 
<br/><br/><label>Dewey Class. No.: </label>512.81/DUE