Sugunthan, Yogenthiri. <br/><br/>
Grade - 11 SCIENCE QUESTION PAPERS. 

 - 1st Ed. 
 - Colombo :   Lanka Book Depot (PVT) Ltd,  2017. 
 - iv, 248 p. 
<br/><br/><label>ISBN: </label>9789557053424 
<br/><br/><label>Dewey Class. No.: </label>500  / SUG