Green,S.L <br/><br/>
උසස් පෙළ ශුද්ධ ගණිතය   Advanved Level Pure Mathematics 

 - The Educational Publications Department  Pitakotte  1981 
<br/><br/><label>Nat. Bib. No.: </label>0004689 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>GRE 
<br/><br/><label>Universal Decimal Class. No.: </label>510