TOLBA, Mostafa K. <br/><br/>
Desertification: Its causes and conserquences 

 - New York  PERGAMON PRESS  1977 
 - 448 p. 
<br/><br/><label>ISBN: </label>0-08-022033-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DESERTIFICACION<br/>CAUSAS<br/>CONSECUENCIAS
<br/><br/><label>Universal Decimal Class. No.: </label>631.45 TOL