00632naa a2200229 a 450000100080000000500110000800800410001910000200006024500860008026000090016665000260017565000260020165000120022765000160023965300080025565300120026365300210027570000170029670000170031370000160033077300560034616147991995-06-27       1991    bl ---       0--  u    #d1 aHAMILTON, S. D.  aEffect of N fertilizer rate on the estimation of N2 fixation by isotope dilution.  c1991  aDiluição Isotópica  aLupinus Angustifolius  aMétodo  aNitrogênio  a15N  aA VALUE  aADUBACAO QUIMICA1 aCHALK, P. M.1 aSMITH, C. J.1 aHOPMANS, P.  tSoil Biol. Biochem.gv.23, n.12, p.1105-1110, 1991.