Hillel, Daniel. The efficient use of water in irrigation : principles and practices for improving irrigation in arid and semiarid regions / Daniel Hillel. - Washington, D.C. : World Bank, 1987. - ix, 107 p. : ill. - World Bank technical paper, no. 64 0253-7494 ; . ISBN: 0821309145 Subjects--Topical Terms: Irrigation efficiency.Irrigation.