Ariyaratna, D.H. <br/><br/>
Gems of shri lanka 

 - 5th Revised ed. 
 - Colombo  Sri Lanka Association for Advancement of science  1976 
 - [xiv],110p.  21cm 
<br/><br/><label>ISBN: </label>9559549405 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gems
<br/><br/><label>Dewey Class. No.: </label>553.8  / ARI