Pathinayake, Ranjani. <br/><br/>
MY TUTOR Grade - 11 SCIENCE :  Book - 2. 

 - 1st Ed. 
 - Dehiwala :  Gihan Book Shop,  2020. 
 - 216 P. 
<br/><br/><label>ISBN: </label>9789557071237 
<br/><br/><label>Dewey Class. No.: </label>500  / PAT