Introductionto The Theory of Numbers 

 - 4th 
 - London  Oxford University Press  1975 
 - 421p 
<br/><br/><label>ISBN: </label>0194423190 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number Theory
<br/><br/><label>Dewey Class. No.: </label>512.7 HAR/I