Deniyawatta, Prema <br/><br/>
Bhu paddathiya, Pruthiviye vyuhaya saha sanyuthiya 

 - Nugegoda :  Sarasavi,   2014. 
 - 104p.    ;  22cm 
<br/><br/><label>ISBN: </label>9789556717907 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences
<br/><br/><label>Dewey Class. No.: </label>550  /  Den