Tyra ,M <br/><br/>
Magical book on quicker maths 

 - 4th 
 - Delhi  BSC Pub. CO. PVT. LTD.  2013 
 - 857p. 
<br/><br/><label>ISBN: </label>9788190458924 
<br/><br/><label>Dewey Class. No.: </label>510  T981M