4th International Workshop : Proceedings - Land Drainage ( February, 1990 Cairo - Egypt ) 

 - ICID  1991 
 - p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ICID Publications.<br/>DRAINAGE.<br/>ICID.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>India, New Delhi.