Department of Education  <br/><br/>
උසස් පෙළ භෞතිකය   

 - Department of Education Publisher   Battaramulla   1993 
 - 115p  1 
 - 2023-11-14 
<br/><br/><label>Nat. Bib. No.: </label>0004865 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>EDU  
<br/><br/><label>Universal Decimal Class. No.: </label>570