Problems of the arid zone 
/ Proceedings of the Paris symposium 
 - France:   UNESCO,   1962 
 - xii, 481p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Proceedings
<br/><br/><label>Universal Decimal Class. No.: </label>551.453.001.5(082.2)  / K2.18