Studies on the carbon and nitrogen cycles in the soil. IV. Natural and artificial humic acids

Du Toit, M. M. S. and Page, H. J. (1932) Studies on the carbon and nitrogen cycles in the soil. IV. Natural and artificial humic acids. The Journal of Agricultural Science, 22 (1). pp. 115-125. 10.1017/S0021859600053132
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Date Deposited 05 Dec 2025 10:20
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