Karunasena,N.V. <br/><br/>
විද්‍යාවට ඉගැන්වීම 
= Widyawata iganwima 


 - 2nd Ed.; 
 - Malwaththa  Karunasena,  2000 
 - xiv,102p.;  ill  21cm 
<br/><br/><label>ISBN: </label>95596966807 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science: Teaching
<br/><br/><label>Dewey Class. No.: </label>507  / KAR