Eng.Mihira Jeevananda Advanced Level Physics- Unit & Dimensions - Thathsarani Publisher Piliyandala 2016 - 80p 1 - 2023-11-22 ISBN: 978-955-7287-02-7 Nat. Bib. No.: 0007149 Nat. Bib. Agency Control No.: JEE Universal Decimal Class. No.: 530