Samarasinghe, Chandra <br/><br/>
අතිරේක කියවිමට විද්‍යාව 1 
 Athireka kiyavimata vidyaava 

 - Mathara  Pahan   1986 
 - 69p.,  21 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atom <br/>Invertebrate <br/>Science <br/>Bacteria <br/>Biosphere <br/>Poison
<br/><br/><label>Universal Decimal Class. No.: </label>5  / SAM