00368naa a2200121 a 450000100080000000500110000800800410001910000150006024500950007526000090017065000160017977300510019516195811995-06-27       1968    bl ---       0--  u    #d1 aDE LEY, J.  aDNA base composition and classification of some more free-living nitrogen-fixing bacteria.  c1968  aNitrogênio  tAntonie Leeuwenhoekgv.34, n.1, p.66-70, 1968.