颁布单位：[University of the Free State] |  颁布时间：2007 |  实施时间：2007 |  学科分类：[["Plinthic, and, duplex, soils","Redox, conditions","Ferrolysis","Fe-Mn, redistribution","Toposequence","Colour","Mottling","Concretions","Texture, differentiation, (morphology)","Soil, formation, --, South, Africa, --, Free, State","Soil, texture, --, South, Africa, --, Free, State","Metals, --, Absorption, and, desorption","Soil, absorption, and, desorption","Dissertation, (M.Sc.Agric., (Soil,, Crop, and, Climate, Sciences))--University, of, the, Free, State,, 2007"]]

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颁布单位：[University of the Free State] |  颁布时间：2007 |  实施时间：2007 |  学科分类：[["Corn, --, Water, requirements, --, South, Africa, --, Fort, Hare","Water, harvesting, --, South, Africa, --, Fort, Hare","Rain, and, rainfall, --, South, Africa, --, Fort, Hare","Dissertation, (M.Sc.Agric., (Soil,, Crop, and, Climate, Sciences))--University, of, the, Free, State,, 2007"]]

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