Sixth congress on irrigation and drainage (New Delhi - 1966):   Reports for discussion 

 - New Delhi:   International Commission on Irrigation and Drainage,   1966 
 - 20.499p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Report
<br/><br/><label>Universal Decimal Class. No.: </label>626.81/.86(063)  / K6