Kovalik, N. <br/><br/>
මුහුදු ලෝකය 
= muhudu lokaya 


 - Colombo:  Marga ayathanaya,  1979. 
 - 71p.;  21cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Sciences
<br/><br/><label>Dewey Class. No.: </label>551.46  / WLA