Arid lands in transition;  [papers] 
Edited by Harold E. Dregne.  
 - Washington  [American Association for the Advancement of Science]  1970.  
 - xiii, 524 p  illus., maps  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.
<br/><br/><label>LC Class. No.: </label>S613  / .I48 1969