Ganeshalingam, K. Rafeethu, M.S.M. <br/><br/>
Mathematics - Grade 9. 

 - 1st Ed. 
 - Colombo :   Lanka Book Depot,   2011. 
 - iv, 232 p. 
<br/><br/><label>ISBN: </label>9789550635245 
<br/><br/><label>Dewey Class. No.: </label>510  / GAN