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检索到 3 条 主题词=Urea as feed. 的结果    

 


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  1. 西文图书1.Nonprotein nitrogen in the nutrition of ruminants / FAO/S852.2/FAO

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    by J. K. Loosli and I. W. McDonald.
    Food and Agriculture Organization of the United Nations, 1968.
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  2. 西文图书2.Urea as a protein supplement / 1st ed. S816/UPS

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    edited by Michael H. Briggs.
    Pergamon Press, c1967.
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  3. 西文图书3.Urea and other nonprotein nitrogen compounds in animal nutrition / S816/UON

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    Board on Agriculture and Renewable Resources...[etc.]
    National Academy of Sciences, 1976.
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