Perelman, Y. <br/><br/>
ගණිත විනෝදය  
= ganitha vinoodaya 


 - Moscow:  Pragathi, 
 - 196p.  col.ill.;   20 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Performing Arts
<br/><br/><label>Dewey Class. No.: </label>793.73  / PER