颁布单位：[University of the Free State] |  颁布时间：2006 |  实施时间：2006 |  学科分类：[["Precision, agriculture","Precision, farming","Variable-rate, application","Single, rate, application","Profitability","Spatial, error, model","Nitrogen","South, Africa","Precision, farming, --, South, Africa, --, Bothaville","Corn, --, South, Africa, --, Bothaville","Nitrogen, fertilizers","Thesis, (Ph.D., (Agriculture, Economics, (Centre, for, Agricultural, Management))--University, of, the, Free, State,, 2006"]]

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颁布单位：[University of the Free State] |  颁布时间：2006 |  实施时间：2006 |  学科分类：[["Psycho-educational, investigation","Multicultural, education","Multicultural, education, framework","Social, responsible, education","Education, for, new, South, Africa","Multicultural, education, --, South, Africa, --, Northern, Cape","Multiculturalism, --, South, Africa, --, Northern, Cape","Thesis, (Ph.D., (Psychology, of, Education))--University, of, the, Free, State,, 2006"]]

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颁布单位：[University of the Free State] |  颁布时间：2006 |  实施时间：2006 |  学科分类：[["Thesis, (Ph.D., (Centre, for, Sustainable, Agriculture))--University, of, the, Free, State,, 2006","Livestock, farming, systems, --, South, Africa, --, Limpopo","Sustainable, agriculture, --, South, Africa, --, Limpopo"]]

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