Khurrana, P. <br/><br/>
The power of number/by P. Khurrana 

 - New Delhi  Crest publishing house  2003 
 - xii, 256p. 
<br/><br/><label>ISBN: </label>81-242-0310-5 
<br/><br/><label>Dewey Class. No.: </label>133.335  K529P