Lakshman Palandage භෞතික රසායනය ඉලක්ක රචනා - S.Godage&Brothers Publication Colombo 2018 - 184p 1 - 2023-11-29 ISBN: 978-955-30-8946-5 Nat. Bib. No.: 0006072 Nat. Bib. Agency Control No.: PAL Universal Decimal Class. No.: 540