00759pam a2200217 a 4500 20241112080351.0 180418s1988 dcua b i000 0 eng 88000195 0821310305 (pbk.) DLC DLC BD-DhBPA 333.913 19 EFF 1988 Efficiency in irrigation : the conjunctive use of surface and groundwater resources / edited by Gerald T. O'Mara. Washington, D.C. : World Bank, c1988. viii, 196 p. : ill. ; 28 cm. A World Bank symposium 30205 Includes bibliographies. Irrigation Economic aspects. 15482 Irrigation efficiency. 15482 O'Mara, Gerald T. 30206 ddc BK 10447 10447 0 ddc 0 0 BPATC BPATC GEN 2018-04-09 0 333.913 EFF 1988 63769 2018-04-09 00:00:00 2018-04-09 BK Moklesur