00484naa a2200133 a 450000100080000000500110000800800410001910000170006024501690007726000060024665300090025270000170026177300720027811081642003-12-10               bl ---       0--  u    #d1 aBREMNER, J.M  aDetermination and isotope-ratio analysis of different forms of nitrogen in soils. 3. Exchangeable ammonium, nitrate, and nitrite by extraction-destillation methods.  c0  aSOLO1 aKEENEY, D.R.  tSoil Science Society of America Proceedingsgv.30, p.577-582, 1966.