Properties of Soil Humic Substances in Fractions Obtained by Sequential Extraction with Pyrophosphate Solutions at Different pHs. III. FT-IR and ^1H NMR Spectra of Humic Acids

• Autores: N. Fujitake, A. Kusumoto
• Localización: Soil science and plant nutrition, ISSN 0038-0768, Vol. 49, Nº 3, 2003, págs. 347-452
• Idioma: inglés
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