00473naa a2200169 a 450000100080000000500110000800800410001910000180006024500750007826000090015365000160016265000140017865000180019265300260021070000200023677300470025615978781995-06-27       1976    bl ---       0--  u    #d1 aCANNON, F. C.  aExpression of Klebsiella nitrogen fixation genes (nif) in Azotobacter.  c1976  aAzotobacter  aGenética  aMicrorganismo  aMicrorganismo-vários1 aPOSTGATE, J. R.  tNaturegv. 260, n. 5548, p. 271-272, 1976.