Gunasekara,Saman Pushpa අන්තර්ජාතික ස්ංවිධාන 1 - S.Godage saha Sahodarayoo Vallampitiya 2015 - 189p 1 - 2023-10-13 ISBN: 978-955-30-6215-4 Nat. Bib. No.: 0005115 Nat. Bib. Agency Control No.: GUN Universal Decimal Class. No.: 001