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The nature and chemical properties of humic acid. I. Humus composition of soils used and the photometric properties of humic acid



The nature and chemical properties of humic acid. I. Humus composition of soils used and the photometric properties of humic acid



Journal of the Science of Soil and Manure, Tokyo 43(7): 231-237



The humic acid composition of 21 soils was studied, and the optical characteristics and IR spectra of the humic acids were recorded.

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