Worthington, Edgar Barton,  1905-, <br/><br/>
Arid land irrigation in debeloping countries  :   environmental problems and effects  /  
Edgar Barton Worthington. 
 - oxford :  Pergamon Press  c1977. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>RIEGO--CONDICIONES AMBIENTALES; CONGRESOS.<br/>RIEGO--CONGRESOS.--PAISES EN DESARROLLO<br/>ZONAS ARIDAS--CONGRESOS.