Ariyasinghe,K <br/><br/>
Science Grade 10  step by step Questions& Answers 
K,Ariyasinghe 
 - Nugegoda  sarasavi publishers (Pvt)Ltd  2008 
 - 88 p 
<br/><br/><label>ISBN: </label>958955573 
<br/><br/><label>Dewey Class. No.: </label>500  / Ari