Gunasekara,T.A.R.J G.C.E. (Advanced Level) Chemistry Grade 12 Resource Book Organic Chemistry - Department Of Science Maharagama - 80p 1 - 2024-01-12 ISBN: 978-955-654-745-0 Nat. Bib. No.: 0007789 Nat. Bib. Agency Control No.: GUN Universal Decimal Class. No.: 540