00368naa a2200133 a 450000100080000000500110000800800410001910000160006024500700007626000090014665000160015570000180017177300450018916206401995-06-27       1968    bl ---       0--  u    #d1 aMAHL, M. C.  aNitrogen fixation by cell-free extracts of Klebsiella pneumoniae.  c1968  aAzotobacter1 aWILSON, P. W.  tCan. J. Microbiol.gv.14, p.33-38, 1968.