00249nam a22001097a 4500020001500000082001400015100001800029245003200047260003700079300000900116650001400125  a9555890331  a547.2 WAN  aWannigama,G.P  aOrganic Reaction Mechanisms  aPeradeniyabWannigama, G.Pc2000  a166P  aChemistry