00654naa a2200253 a 450000100080000000500110000800800410001910000180006024500620007826000090014065000220014965000140017165000130018565000150019865000150021365000130022865300120024165300230025365300140027665300120029070000220030270000200032477300560034416109201995-06-27       1987    bl ---       0--  u    #d1 aSPRENT, J. I.  aSome aspects of the biology of nitrogen-fixing organisms.  c1987  anitrogen fixation  aorganisms  aBiologia  aFisiologia  aInfecção  aSimbiose  aBiology  aNitrogenio fixacao  aOrganismo  aUAPNPBS1 aSUTHERLAND, J. M.1 aFARIA, S. M. DE  tPhil. Trans. R. Soc. Lond.gv.317, p.111-129, 1987.