Pathmasiri, Ranjith K ගණිතය II කොටස 10 ශ්රේණීය - Agasara Publisher Nugegoda 2016 - 138p 1 - 2024-02-09 ISBN: 978-955-7949-42-0 Nat. Bib. No.: 0004759 Nat. Bib. Agency Control No.: PAT Universal Decimal Class. No.: 510