O'Mara, G.T. <br/><br/>
Issues in the Eeficient use of surface and groundwater in irrigation 

 - World Bank Staff Working Papers  Washington 
 - 93p. 
<br/><br/><label>Nat. Bib. No.: </label>6115 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.67  / O'MA