00388naa a2200145 a 450000100080000000500110000800800410001910000230006024500550008326000090013865000230014765000090017065300120017977300510019120167252015-05-29       1963    bl ---       0--  u    #d1 aWILLIAMS, R. J. B.  aThe effects of cropping systems on soil stability.  c1963  aSistema de Cultivo  aSolo  aEfeitos  tSoil Fert.gv. 26, n. 5, p. 326, 1963. Resumo.