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

 - Delhi  BSC Publishing Co. Pvt. Ltd.  1995 
 - 553 p. 
<br/><br/><label>ISBN: </label>9788190458924 
<br/><br/><label>Dewey Class. No.: </label>510  / N95 TYR