颁布单位：[University of the Free State] |  颁布时间：1987 |  实施时间：1987 |  学科分类：[["Calves","Calves, --, Feeding, and, feeds","Beef, cattle, --, Carcasses","Beef, cattle, --, Feeding, and, feeds","Dissertation, (M.Sc.(Agric., (Animal, Science))--University, of, the, Free, State,, 1987"]]

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