Arid lands in transition / 
edited by Harold E. Dregne 
 - Washington :  American Association for the Advancement of Science,  1970 
 - xiii, 524 p. :  ill. ;  24 cm. 
 - Publication (American Association for the Advancement of Science) ; no.90. .
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0871680904 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Congresses<br/>Arid regions--Congresses