Thennakoon,Dharmarathna තුරු තොරතුරු - S.Godage Publishers Colombo 10 2016 - 80p 1 - 2023-12-15 ISBN: 978-955-30-6817-0 Nat. Bib. No.: 0003976 Nat. Bib. Agency Control No.: THE Universal Decimal Class. No.: 581