Tennakoon, N.A.Mahindapala, R.Vidanapathirana, S.2014-06-042014-06-041995Journal of the National Science Council, 23(4):p.171-182https://dl-cri.nsf.gov.lk//handle/1/4005enOrganic fertilizersSoil improvementEffects of organic manure on the quality of coconut soilsArticle