00348naa a2200121 a 450000100080000000500110000800800410001910000180006024500730007826000090015170000200016077300460018016183501995-06-27       1993    bl uuuu     u00u1 u    #d1 aHARDARSON, G.  aMethods for measuring biological nitrogen fixation in grain legumes.  c19931 aDANSO, S. K. A.  tPlant Soilgv. 152, n. 1, p. 19-23, 1993.