Hardy, G. H. <br/><br/>
Introduction to the theory of numbers 
G. H. Hardy and E. M. Wright 
 - 5th ed. 
 - London  The English Language Book Society  1981 
 - xvi,426p.;  24cm. 
<br/><br/> Library has 6th ed. also 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory <br/>Selberg trace formula
<br/><br/><label>Dewey Class. No.: </label>512.7  / HAR