Beling, A.S.Nissanka, W.G.A.Abeynayake, K.2010-07-062010-07-061992Journal of the National Science Council of Sri Lanka, 20(2):p.237-250https://dl.nsf.gov.lk/handle/1/6106ArrackCoconut toddyEnvironmental pollutionSalvinia molestaEichhornia crassipesKalutara districtBreweryBeveragesChemiacal IndustryArticle