00557naa a2200217 a 450000100080000000500110000800800410001910000200006024500500008026000090013065000170013970000170015670000180017370000180019170000230020970000170023270000170024970000190026670000190028577300350030415993071995-06-27       1977    bl ---       0--  u    #d1 aROGERSON, A. C.  aNitrogen fixation in grass-Spirillum systems.  c1977  aAzospirillum1 aSMITH, R. L.1 aBOUTON, J. H.1 aSCHANK, S. C.1 aQUESENBERRY, K. H.1 aTYLER, M. E.1 aMILAN, J. R.1 aGASKINS, M. H.1 aLITTELL, R. C.  tSciencegv.195, p.1362-, 1977.