Grainger, Alan. <br/><br/>
The threatening desert :  controlling desertificaion / 
by Alan Grainger. 
 - London :  Earthscan Publications, in association with UNEP,  1990. 
 - xiv, 369 p. : ill. 
<br/><br/><label>ISBN: </label>1853830410 
<br/><br/><label>LCCN: </label>90034146 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural conservation.<br/>Forest conservation<br/>Desertification--Control