00581naa a2200181 a 450000100080000000500110000800800410001910000250006024501170008526000090020270000200021170000190023170000240025070000220027470000150029670000160031177300720032710308352008-04-09       2006    bl ---       0--  u    #d1 aGONZÁLEZ-PÉREZ, M.  aCharacterization of humic acids extracted from sewage sludge-amended oxisols by electron paramagnetic resonance.  c20061 aMARTIN-NETO, L.1 aCOLNAGO, L. A.1 aMILORI, D. M. B. P.1 aCAMARGO, O. A. de1 aBERTON, R.1 aBETTIOL, W.  tSoil & Tillage Research, Amsterdamgv. 91, n. 1-2, p. 95-100, 2006.