Piyadigama, Mahanama <br/><br/>
විදු ගුරු හුරුව 
= widu guru huruwa 


 - Unavatuna :  Author,  1999. 
 - 132p.;  ill,;  22cm 
<br/><br/><label>ISBN: </label>955977400x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science<br/>Study and Teaching
<br/><br/><label>Dewey Class. No.: </label>507  / PIY