00370naa a2200145 a 450000100080000000500110000800800410001910000230006024500420008326000090012565000140013465000100014865000240015877300420018216006901995-06-27       1977    bl ---       0--  u    #d1 aMELLO, F. A. F. DE  aA relacao pH x Al3+ trocavel do solo.  c1977  aAlumínio  aFerro  aFertilidade do Solo  tR. Agric.gv.7, n.4, p.213-218, 1977.