Norman W Hudson. (1993). FAO soils bulletin N.68: Field measurement of soil erosion and runoff. Rome: FAO.
シカゴスタイル引用形Norman W Hudson. FAO Soils Bulletin N.68: Field Measurement of Soil Erosion and Runoff. Rome: FAO, 1993.
MLA引用形式Norman W Hudson. FAO Soils Bulletin N.68: Field Measurement of Soil Erosion and Runoff. Rome: FAO, 1993.
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