00375nam a2200133 a 450000100080000000500110000800800410001910000180006024500960007826000270017430000100020165000160021165300140022718444911992-08-26               bl uuuu     u0uu1 u    #d1 aMOLINA, J. S.  aAgronomic consequences of the biological fixation of the atmospheric nitrogen in Argentina.  a[S.l.: s.n., 197-].c0  a12 p.  aNitrogênio  aFixação