Soil erosion by water : some measures for its control on cultivated lands / Food and agriculture organization of the United Nations. Food and Agriculture Organization of the United Nations. Soil conservation. Soil erosion. 631.45 FOS Includes bibliography. Rome : Food and Agriculture Organization of the United Nations ; c1965 c1965 1965 Text xxi, 284 p. : eng FAO agricultural development paper ; no. 81.