Gunasekara, Ranjith ප්රවෘත්තිකරණය - S.Godage Publisher Colombo 2006 - 88p 1 - 2024-02-05 ISBN: 955-20-8641-8 Nat. Bib. No.: 0002538 Nat. Bib. Agency Control No.: GUN Universal Decimal Class. No.: 651.7