Gunaratne, H.S. <br/><br/>
Rocks and minerals of ceylon 

 - Colombo :  The department of national museums,  1967. 
 - iii,58p.;  22cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chandrens'  Literature
<br/><br/><label>Dewey Class. No.: </label>549  / GUN