颁布单位:[University of the Free State] |
颁布时间:1989 |
实施时间:1989 |
学科分类:[["Dissertation, (M.Sc.Agric., (Agricultural, Economics)), University, of, the, Orange, Free, State,, 1990","Agricultural, productivity, --, South, Africa, --, Southern, Free, State","Agriculture, --, Economic, aspects, --, South, Africa, --, Southern, Free, State","Irrigation, --, Economic, aspects, --, South, Africa, --, South, Free, State"]]