00492naa a2200157 a 450000100080000000500110000800800410001910000200006024500750008026000090015530000140016465000090017870000170018770000180020477301120022221195482020-02-11       1987    bl uuuu     u00u1 u    #d1 aCRAVO, M. D. S.  aPotassium management in Humid Tropical Oxisols.h[electronic resource]  c1987  ap. 97-99.  aSolo1 aSMYTH, T. J.1 aBASTOS, J. B.  tIn: CAUDLE, N. (Ed.). Tropsoils technical report 1985-1986. Raleigh: North Carolina State University, 1987.