Hardy, G. H. and Wright, E. M. <br/><br/>
Introduction to the theory of numbers   

 - 4th 
 - London  Oxford University Press  1975 
 - xvi, 421p. Index 
<br/><br/> "English language book society publication".   
<br/><br/><label>Dewey Class. No.: </label>512.7  / H269.IT