Perelman, Y. <br/><br/>
ගණිත විනෝදය    
= gaNitha vinoodhaya 


 - Colombo :  Pragathi Publishers,  2014. 
 - 197p.;  22cm 
<br/><br/><label>ISBN: </label>978-955-1319-35-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / PER