Nelkon, M. <br/><br/>
උසස් පෙළ භෞතිකය 
 Usaspela  bhauthikaya.4 

 -  Department of education  1988 
 - 450p., ill.,  21 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics <br/>Atom <br/>Electricity
<br/><br/><label>Universal Decimal Class. No.: </label>53  / NEL