Nagell, Trygve,  1895- <br/><br/>
Introduction to number theory/ 
Trygve Nagell. 
 - 2nd ed., 2nd print. 
 - New York:  Chelsea,  c1981. 
 - 309 p.;  21 cm. 
<br/><br/> Includes indexes. 
<br/><br/><label>ISBN: </label>0828401632 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory.
<br/><br/><label>Dewey Class. No.: </label>512.7  / N147i