Sugunthan Yogenthiri <br/><br/>
Science   Part 1 
Sugunthan Yogenthiri 
 - Colombo  Lanka Book Depot (Pvt) Ltd  2017 
 - 258p. 
<br/><br/><label>ISBN: </label>9789557050072 
<br/><br/><label>Dewey Class. No.: </label>500  / SUG