00609naa a2200229 a 450000100080000000500110000800800410001910000150006024501110007526000090018665000080019565000110020365000260021465000120024065300080025265300090026065300080026970000170027770000170029470000170031177300510032816099781995-06-27       1989    bl uuuu     u00u1 u    #d1 aSAH, R. N.  aEvaluation of isotopic dilution method for measuring N2 fixation in AzollabComparison with other methods.  c1989  aAra  aAzolla  aDiluição Isotópica  aMétodo  a15N  a15N2  aFBN1 aGOYAL, S. S.1 aRAINS, D. W.1 aPAIGE, D. F.  tJ. Plant Nutr.gv. 12, n. 3, p. 341-362, 1989.