Case studies on desertification 
UNESCO 
 - PAris  UNESCO  1980 
 - 279p.  ill.  30cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9231018205 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Desertification<br/>Control
<br/><br/><label>LC Class. No.: </label>IRA S612.2.U5