Sustaining the Soil :  indigenous soils and water conservation in africa / 
edited by Chris Riej,Ian Scones and Camilla Toulmin  
 - London :  Earthscan Publications ltd ,  c1996. 
 - xii,260p.:  ill.(B&W) ;  23cm 
<br/><br/> includes:index (p.248-260) 
<br/><br/><label>ISBN: </label>185383372x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>water conservation
<br/><br/><label>Dewey Class. No.: </label>333.731  / SUS