Pavanasasivam, V.Kalpage, F.S.C.P.2021-03-312021-03-311974Tropical Agriculturist, 130:p.191-200https://dl-doa.nsf.gov.lk/handle/1/3026SOILZincCopperSoilsStatus of zinc and copper in the wet-patana soils of sri lankaArticle