00419nam a2200169 a 450000100080000000500110000800800410001910000190006024500630007926000220014230000100016465000170017465000120019165000090020370000180021270000190023018445221992-08-26       1978    bl uuuu     u0uu1 u    #d1 aNIELSEN, D. R.  aNitrate leaching losses on spatially variable field soils.  a[S.l.: s.n.c1978  a46 p.  aFertilizante  aNitrato  aSolo1 aBIGGAR, J. W.1 aSIMMONS, C. S.