000 00495nam a22001937a 4500
015 _a6115
041 _a1
080 _a631.67
_bO'MA
100 _aO'Mara, G.T.
245 _aIssues in the Eeficient use of surface and groundwater in irrigation
260 _aWorld Bank Staff Working Papers
_bWashington
300 _a93p.
650 _aAgriculture
852 _a4L 3-3
999 _c4025
_d4025