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