00374naa a2200121 a 450000100080000000500110000800800410001910000190006024500990007926000090017870000200018777300450020716143321995-06-27       1991    bl ---       0--  u    #d1 aMATERON, L. A.  aNitrogen fixation in two annual Medicago legumes, as affected by inoculation and seed density.  c19911 aDANSO, S. K. A.  tField Crops Res.gv.26, p.253-262, 1991.