颁布单位：[University of the Free State] |  颁布时间：1991 |  实施时间：1991 |  学科分类：[["Pastures, --, South, Africa, --, Northern, Cape","Dissertation, (M.Sc.Agric., (Animal,, Wildlife, and, Grassland, Sciences))--University, of, the, Free, State,, 1991"]]

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颁布单位：[University of the Free State] |  颁布时间：1983 |  实施时间：1983 |  学科分类：[["The, Northern, Times","South, African, newspapers","Newspapers","Community, newspapers, --, South, Africa","Dissertation, (M.A., Communication, Science))--University, of, the, Free, State,, 1984"]]

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颁布单位：[University of the Free State] |  颁布时间：1971 |  实施时间：1971 |  学科分类：[["Phosphatic, fertilizers","Soils, --, South, Africa, --, Northern, Cape, --, Vaalharts","Soils, --, Phosphorus, content","Dissertation, (M.Sc.Agric., (Soil, Science))--University, of, the, Free, State,, 1971"]]

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