Perera,H.A.S <br/><br/>
දැනුම 
 Danuam 

 -    1990 
 -  32p.;21 cm cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General Knowledge
<br/><br/><label>Universal Decimal Class. No.: </label>001  / PER