FAO Irrigation and drainage paper 28-32 

 - Rome: FAO.,  1976 
 - Various paging 
 - FAO Irrigation and drainage paper no; 28-32 .
<br/><br/>28. Drainage testing. 29. Water quality for agriculture. 30. Self-help wells. 31. Groundwater pollution. 32. Deterministic models in hydrology 
<br/><br/><br/>Eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>IRRIGATION.<br/>DRAINAGE.