00540naa a2200217 a 450000100080000000500110000800800410001910000150006024500630007526000090013865000200014765000140016765000090018165000150019065000110020565000140021665000090023070000200023970000170025977300460027613698151998-07-21       1978    bl ---       0--  u    #d1 aROY, R. N.  aSoil and fertilizer potassium in crop nutritionba review.  c1978  aplant nutrition  apotassium  asoil  aNutrição  aPlanta  aPotássio  aSolo1 aSEETHARAMAN, S.1 aSINGH, R. N.  tFertiliser Newsgv.23, n.6, p.3-26, 1978.