Wijerathne, D. <br/><br/>
English via sinhala 

 - Fifth 
 - Sarasavi publishers  Nugegoda 
 - 420p. 
<br/><br/><label>Nat. Bib. No.: </label>6285 
<br/><br/><label>Universal Decimal Class. No.: </label>420  / WIJ