Number theory : 
Coppel, W. A. 
 - New York, NY :  Springer,  2006 
 - 2 v. ;  26 cm. 
<br/><br/><label>ISBN: </label>9780387298511 (pt. A : acid-free paper) | 0387298517 (pt. A : acid-free paper) | 0387298525 (pt. A : e-ISBN) | 9780387298535 (pt. B : acid-free paper) | 0387298533 (pt. B : acid-free paper) | 0387298541 (pt. B : e-ISBN) | 9780387300191 (set : acid-free paper) | 0387300198 (set : acid-free paper) | 0387305297 (set : e-ISBN)