Desertification and Migrations Desertificacion  Y Migraciones  

 - Logrono    Geoforma Ediciones  1995 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arid and  Semiarid  Land.
<br/><br/><label>Dewey Class. No.: </label>333.736 DES