Ariyasinghe, K. <br/><br/>
Grade 10 Science Biology :  step by step Questions & Answers. 

 - 1st Ed. 
 - Nugegoda :  sarasavi publishers (Pvt)Ltd,  2008. 
 - iv, 88 p. 
<br/><br/><label>ISBN: </label>9789555737234 
<br/><br/><label>Dewey Class. No.: </label>500  / ARI