Hudson, Norman W.
Soil and water conservation in semi-arid areas / by Norman W. Hudson. - Rome : Food and Agriculture Organisation of the United Nations, 1987. - xii, 172 p. : ill. (some col.) - FAO soils bulletin ; no. 57 .
Soil conservation
Water conservation
Soil and water conservation in semi-arid areas / by Norman W. Hudson. - Rome : Food and Agriculture Organisation of the United Nations, 1987. - xii, 172 p. : ill. (some col.) - FAO soils bulletin ; no. 57 .
Soil conservation
Water conservation