Dantanarayana, Anura P.2024-10-142024-10-141981https://ir.lib.pdn.ac.lk/handle/20.500.14444/2017en-USNew oxygenated lupanes from Pleurosylia opposita (Wall) Alston (Celastraceae) and Phycocolloids from some seaweeds of Sri LankaThesis