Tekriwal, Gaurav <br/><br/>
Maths sutra : the art of vedic speed calculation 

 - Gurgaon  Penguin books pub.  2015 
 - 311p. 
<br/><br/><label>ISBN: </label>9780143425021 
<br/><br/><label>Dewey Class. No.: </label>513.2076  T236M