Dissanayake, D.M.A.P.Perera, A.M.A.Jayalath, A.2014-07-102014-07-101996Bulletin of the Rubber Research Institute of Sri Lanka, 34:p.49-54https://dl-rri.nsf.gov.lk//handle/1/2421AgriculturePhosphorusMining technologyPlant nutritionDissolutionRock phosphate fertilizers with special reference to EppawalaArticle