[6]
Molecular size distribution of humic acids as affected by the ionic strength and the degree of humification .2 Tsutsuki K,Kumatsuka S. Soil Science and Plant Nutrition . 1984
[6]
Molecular size distribution of humic acids as affected by the ionic strength and the degree of humification .2 Tsutsuki K,Kumatsuka S. Soil Science and Plant Nutrition . 1984