00421naa a2200169 a 450000100080000000500110000800800410001910000180006024500520007826000090013065000120013965000200015165000160017165000090018770000190019677300360021516184221995-06-27       1966    bl ---       0--  u    #d1 aKEENEY, D. R.  aA chemical index of soil nitrogen availability.  c1966  aMétodo  aMineralização  aNitrogênio  aSolo1 aBREMNER, J. M.  tNaturegv.211, p.892-893, 1966.