Dudley, Underwood. <br/><br/>
Elementary number theory 
Underwood Dudley. 
 - San Francisco  W. H. Freeman  [1969] 
 - ix, 262 p. 
 - A Series of books in mathematics .
<br/><br/>Bibliography: p. [187]-189. 
<br/><br/><label>ISBN: </label>0716704382 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory.