Kuranage, J.S.Fernandopulle, M.N.Tennakoon, N.A.Somasiri, L.L.W.2014-06-032014-06-031996Annual Sessions of Sri Lanka Association for the Advancement ofScience, Sri Lanka. Colombo, 1996. 52:p...https://dl-cri.nsf.gov.lk//handle/1/3860FertilizersFertilizer sourcesEppawala rock phosphateRock phosphateComparative studiesComparison of different production grades of Eppawela rock phosphate with imported rock phosphate