Gems of Ceylon 

 - Colombo:  Ceylon Givernment Publication,  1966. 
 - 48p.;  15 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Sciences<br/>Mahinda Ranaweera Collection
<br/><br/><label>Dewey Class. No.: </label>553.8  / GEM