00433naa a2200145 a 450000100080000000500110000800800410001910000190006024500920007926000090017165000120018070000180019270000150021077300620022515980082009-11-09       1976    bl ---       0--  u    #d1 aFRIESEN, D. K.  aNitrate reduction during kjeldahl digestion of water samples by the perchlorate method.  c1976  aMétodo1 aMILLER, M. H.1 aTEL, D. A.  tCommun. Soil Sci. Plant Anal.gv.7, n.3, p.311-317, 1976.