Liyanage, M.de.S.2014-06-032014-06-031992Paper presented at the FAO/IAEA Research Coordination Meeting,Austria. Vienna, 1992. 2:p...https://dl-cri.nsf.gov.lk//handle/1/3460Farming SystemsGliricidia sp. sepiumNitrogen fixationRadio isotope studiesEstimation of biological nitrogen fixation in gliricidia by 15Nisotope dilution method