(1997). Soil and water conservation manual for Kenya. Nairobi, Kenya: Soil and Water Conservation Branch Ministry of Agricultute, Livestock Development and Marketing Republic of Kenya.
シカゴスタイル引用形Soil and Water Conservation Manual for Kenya. Nairobi, Kenya: Soil and Water Conservation Branch Ministry of Agricultute, Livestock Development and Marketing Republic of Kenya, 1997.
MLA引用形式Soil and Water Conservation Manual for Kenya. Nairobi, Kenya: Soil and Water Conservation Branch Ministry of Agricultute, Livestock Development and Marketing Republic of Kenya, 1997.
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