01024nam0-22003131i-450 99000183366040332120190529131434.0000183366FED01000183366(Aleph)000183366FED0100018336620030910d1995----km-y0itay50------baitaChemical composition of humic acidsa comparison with precursor 'light fraction' litter from different vegetations usingspectroscopic techniquesCarmine Amalfitano, Robinson A. Queszada, Michael A. Wilson, John V. Hanna.s.l....1995p. 391-40126 cmEstr. da: Soil science, 159,(6),1995.Suolo631.41Amalfitano,CarmineHanna,John V.Wilson,Michael A.ITUNINARICAUNIMARCLG99000183366040332160 OP. 156/5FAGBCFAGBCCHEMICAL composition of humic acids412072UNINA