Dias, M.N.Wickramananda, I.R.2014-06-032014-06-031993Proceedings of SLAAS Annual Session Part 1 Abstracts, Sri Lanka.Colombo, 1993. 49:p.121https://dl-cri.nsf.gov.lk//handle/1/3477Farming SystemsLegumesNitrogen fixationEffectiveness of perennial legumes as a source of nitrogen forcoconut