00507naa a2200133 a 450000100080000000500110000800800410001910000140006024501310007426000090020565300960021470000180031077300450032819656142013-09-04       1998    bl ---       0--  u    #d1 aSINGH, K.  aEffects of some leguminous and non-leguminous nitrogen fixing herb, Shrub, Climber and tree species on soil nitrogen accretion  c1998  aThe prmary input of nitrogen into ecosystem is through the process of biological N fixation1 aPOKHRIYAL, T.  tAnn. For.gv. 6, n. 1, p. 119-122, 1998.