Department of Science <br/><br/>
ප්‍රභාසංස්ලේෂණය : අ.පො. ස (සා.පෙළ) 
= praBaasanSHleeshanaya vidyaava pahasuven 02  a.po.sa (sa.pe) 


 - Maharagama :  NIE,  2017. 
 - vi,28p.;  Col. ill.;  25cm 
<br/><br/><label>ISBN: </label>978-955-654-693-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>507  / PRA