Dissanayaka, Jude අභිවෘද්ධි ආලේපය - Author Colombo 2009 - 40p 1 - 2023-12-05 ISBN: 978-955-98831-3-5 Nat. Bib. No.: 0006193 Nat. Bib. Agency Control No.: DIS Universal Decimal Class. No.: 230