(1997). Feeding and working strategies for oxen used for draft purposes in semi-arid West Africa. Dakar: International Livestock Reserch Institute.
シカゴスタイル引用形Feeding and Working Strategies for Oxen Used for Draft Purposes in Semi-arid West Africa. Dakar: International Livestock Reserch Institute, 1997.
MLA引用形式Feeding and Working Strategies for Oxen Used for Draft Purposes in Semi-arid West Africa. Dakar: International Livestock Reserch Institute, 1997.
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