Wannigama, J.P කාබනික රසායනය - Stermeord Lek Publisher Pannipitya 2017 - 259p 1 - 2023-12-07 ISBN: 955-658-032-8 Nat. Bib. No.: 0006063 Nat. Bib. Agency Control No.: WAN Universal Decimal Class. No.: 540