Khurana, K. J. S. , Markanday, R. <br/><br/>
Maths 30 Days Wonder 

 - 1st ed. 
 - xii, 603p. 
<br/><br/><label>ISBN: </label>978-8121933599 
<br/><br/><label>Dewey Class. No.: </label>510.76  KHU M