Erez, A Ridder, N A De <br/><br/>
Optimum use of water resources 

 - Wageningen  ILRI publishers  1977 
 - xii, 250p.; 24cm. 
 - ILRI publications .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ground water resources<br/>Irrigation - economic aspects<br/>Irrigation water supply<br/>Land resources