Characterization of humic acids produced during composting of olive mill wastes: elemental and spectroscopic analyses (FTIR and C-NMR) Ghita Ait Baddi, Mohamed Hafidi, Véronique Gilard and Jean-Claude RevelAgronomie, 23 7 (2003) 661-666DOI: https://doi.org/10.1051/agro:2003042
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