Arid land irrigation in developing countries:Environmental problems and effects.Symp.
Worthington,E.B.
Arid land irrigation in developing countries:Environmental problems and effects.Symp. - Alexandria Egypt.Oxford Pergamon Press 1977 - 463
Economics
Arid lands Economics
333.73
Arid land irrigation in developing countries:Environmental problems and effects.Symp. - Alexandria Egypt.Oxford Pergamon Press 1977 - 463
Economics
Arid lands Economics
333.73