Sampath , Udara ගණිතය : I කොටස 8 ශ්රේණීය - Samudara : Colombo ; - 218p ; 24cm . 01 - 2024-06-28 ISBN: 978955680774 Nat. Bib. No.: 0008542 Nat. Bib. Agency Control No.: SAM Universal Decimal Class. No.: 510