00499naa a2200169 a 450000100080000000500110000800800410001910000140006024501040007426000090017865000270018770000120021470000200022670000130024670000190025977300510027816145521995-06-27       1990    bl ---       0--  u    #d1 aLI, J. G.  aAnalysis of Azotobacter vinelandii strains containing defined deletions in the nifD and nifK genes.  c1990  aAzotobacter vinelandii1 aTAL, S.1 aROBINSON, A. C.1 aDANG, V.1 aBURGESS, B. K.  tJ. Bacteriol.gv.172, n.10, p.5884-5891, 1990.