00534naa a2200181 a 450000100080000000500110000800800410001910000210006024501240008126000090020565000080021465000170022265000100023965000140024970000190026370000180028277300520030016098061995-06-27       1987    bl uuuu     u00u1 u    #d1 aALEXANDER, D. B.  aNitrogen fixation (C2H2 reduction) associated with roots of intact Zea mays in fritted clay at reduced oxygen tensions.  c1987  aAra  aAzospirillum  aMilho  aOxigênio1 aZUBERER, D. A.1 aVIETOR, D. M.  tSoil Biol. Biochem.gv. 19, n. 1, p. 1-6, 1987.