Dissanayaka, J. B. අක්ෂර වින්යාසය - Sumitha Nugegoda 2016 - 300p 1 - 2023-12-05 ISBN: 978-955-0335-56-5 Nat. Bib. No.: 0008631 Nat. Bib. Agency Control No.: DIS Universal Decimal Class. No.: 491.483