Second Approximations: Unplanned Farmer's Contributions to Irrigation Design 

 - ODI-IIMI  1989 
 - p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>IRRIGATION.<br/>IRRIG.<br/>Planning and Design.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Sri Lanka.