Liyanage, L.V.K.Jayasundara, H.P.S.2014-06-032014-06-031989Proceedings of National Workshop on Nitrogen Fixation and SoilFertility, Sri Lanka. Peradeniya, 1989:p.78-87https://dl-cri.nsf.gov.lk//handle/1/3354Farming SystemsNitrogen fixing treesPotential for use of nitrogen fixing trees in coconut plantations