KRISHNAN (V K). <br/><br/>
Elementary number theory:a collection of problems with solutions. 

 - Hyderbad  Universities Press  2011 
 - vi,253  PB 
<br/><br/><label>ISBN: </label>9788173717437 
<br/><br/><label>Dewey Class. No.: </label>512.7  /  KRIV