IRRI. (1980). Soil - related constraints to food production in the tropics. Philippines: IRRI.
シカゴスタイル引用形IRRI. Soil - Related Constraints to Food Production in the Tropics. Philippines: IRRI, 1980.
MLA引用形式IRRI. Soil - Related Constraints to Food Production in the Tropics. Philippines: IRRI, 1980.
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