Gunasoma, Gunasekara <br/><br/>
ආලෝකහ සහ ධ්වනිය 
= alokaya saha dhawaniya (O/Level) 


 - Kottawa:  Sara prakashana,  1995. 
 - 48p.;  21cm 
<br/><br/><label>ISBN: </label>955-584-146-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>535  / GUN