颁布单位：[University of the Free State] |  颁布时间：2002 |  实施时间：2002 |  学科分类：[["Holstein-Friesian, cattle","Selection, indexes, (Animal, breeding)","Milk, --, Prices","Dissertation, (M.Sc.Agric., (Animal,, Wildlife, and, Grassland, Sciences.))--University, of, the, Free, State,, 2002"]]

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