00499naa a2200157 a 450000100080000000500110000800800410001910000190006024501080007926000090018770000160019670000200021270000220023270000200025477300670027410257312008-01-14       2007    bl ---       0--  u    #d1 aNOVOTNY, E. H.  aEffect of residual vanadyl íons on the spectroscopic analysis of humic acidsba multivariate approach.  c20071 aKNICKER, H.1 aMARTIN-NETO, L.1 aAZEREDO, R. B. V.1 aHAYES, M. H. B.  tEuropean Journal of soil science, Oxford, não paginado, 2007.