Hudson, Norman W. Soil and water conservation in semi-arid areas / Norman W. Hudson. - 1st ed. - Jodhpur : Scientific Publishers, 2004 - xiii, 113 p. : tables, ill. figs, picture. ; 29 cm. ISBN: 8172333773 Subjects--Topical Terms: Soil conservationArid regionsWater conservationArid soils Dewey Class. No.: 631.45 / HUS