Dissanayake, D.M.A.P.Perera, A.M.A.Jayalath, A.2012-07-312012-07-311996Bulletin of the Rubber Research Institute of Sri Lanka34pp.49-54https://dl.nsf.gov.lk/handle/1/9281AgriculturePhosphorusMining technologyPlant nutritionDissolutionRock phosphate fertilizers with special reference to EppawalaArticle