00731naa a2200181 a 450000100080000000500110000800800410001910000160006024501720007626000090024830000140025765000130027170000200028470000150030470000200031970000130033977301970035220939382018-08-06       1997    bl uuuu     u00u1 u    #d1 aSCHROTH, G.  aSignificant subsoil accumulation of mineral nitrogen under perennial crops in a ferralitic Amazonian upland soilbeffects of land use systems and single-tree patterns.  c1997  ap. 38-57.  aAmazonia1 aSILVA, L. F. da1 aSEIXAS, R.1 aTEIXEIRA, W. G.1 aZECH, W.  tIn: SHIFT PROJECT ENV 45 (Manaus-AM). Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Manaus: EMBRAPA-CPAA : BMBF, 1997.