Wikramasinghe, martin <br/><br/>
සත්ව ලෝකය 
= vidyaa vinooda kaTHaa - sathva lookaya  


 - Rajagiriya :  Sarasa ,  2014. 
 - 48p.;  ill.;  21 cm. 
<br/><br/><label>ISBN: </label>978-955-0201-21-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science<br/>Primary Education
<br/><br/><label>Dewey Class. No.: </label>372.357  / WIC