Walls, James <br/><br/>
Land, man and sand  desertification and its solution 

 - New York  Macmillan  1980 
 - 336 p. 
<br/><br/><label>ISBN: </label>0026998106 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social problems
<br/><br/><label>Dewey Class. No.: </label>363.34  / WAL