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1
المساهمون: IFPRI-KM, Takeshima, Hiroyuki (International Food Policy Research Institute (IFPRI))
مصطلحات موضوعية: Agricultural Sciences, Social Sciences, tractors, machinery, agricultural mechanization, NIGERIA, WEST AFRICA, AFRICA SOUTH OF SAHARA, AFRICA
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2
المساهمون: Schwab, Benjamin
مصطلحات موضوعية: Agricultural Sciences, Social Sciences, Ethiopia, Agricultural mechanization, Agricultural Labor