Gunasekara,T.A.R.J. G.C.E.(Advanced Level) Chemistry Grade 12 Resource Book Physical Chemistry Part 1 - Department Of Science Maharagama - 57p 1 - 2024-01-12 ISBN: 978-955-654-746-7 Nat. Bib. No.: 0007930 Nat. Bib. Agency Control No.: GUN Universal Decimal Class. No.: 540