D.Wickramasinghe <br/><br/>
New syllabus Science I,II 
Suramya D.Wickramasinghe 
 - Sri Lanka   Samudra book publications  2012 
 - 183 
<br/><br/><label>ISBN: </label>9789556800777 
<br/><br/><label>Dewey Class. No.: </label>500  / WIC