Nagel, Trygve  1895 <br/><br/>
Introduction to number theory 

 - 2a. ed. 
 - New York :   Chelsea,   1964. 
 - 309 p. ;   21 cm. 
 - Chelsea scientific books .
<br/><br/><label>Subjects--Topical Terms: </label><br/>NUMEROS, TEORIA DE LOS
<br/><br/><label>Universal Decimal Class. No.: </label>511