Tennakoon, N.A.2014-06-032014-06-031997Paper presented at the World Fertilizer Congress in . Gent,,Belgium, 1997:p...https://dl-cri.nsf.gov.lk//handle/1/3622FertilizersHeavy metalsSludgeSoil typesConiferous forestsSludgeSoil typesSludgeEffect of application of heavy metal contaminated sewage sludgeon long-term nutrient cycling in coniferous forest soils