00568naa a2200217 a 450000100080000000500110000800800410001910000180006024500790007826000090015765000080016665000260017465000120020065000160021265300080022865300090023665300230024565300120026865300120028077300580029216084331995-06-27       1987    bl ---       0--  u    #d1 aBODDEY, R. M.  aMethods for quantification of nitrogen fixation associated with gramineae.  c1987  aAra  aDiluição Isotópica  aMétodo  aNitrogênio  a15N  a15N2  aABUNDANCIA NATURAL  aREVISAO  aUAPNPBS  tCRC Crit. Rev. Plant Sci.gv.6, n.3, p.209-266, 1987.