A study of the mineral content and feeding value of natural pastures in the Union of South Africa. (Final report.).

作者: A. I. Malan , G. Roets , P. J. Du Toit , J. G. Louw , C. R. Holzapfel

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关键词: GrazingCrude fibreMilk productionGeographyValue (economics)AgroforestryNatural (archaeology)

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