Nelson, Ridley. <br/><br/>
Dryland management: the "desertification" problem . 

 - Washington, D C,   World Bank.  1990. 
 - 39p.  ill. 
<br/><br/><label>ISBN: </label>0821314440 
<br/><br/><label>Dewey Class. No.: </label>333.736  / NEL.N0