by Asit K Biswas | .
by International Commission On Irrigation And Drainage On Application Of Systems Analysis To Irrigation,Drainage And Flood Control | .
by Jacues Constans | .
by S E Jorgensen | .
by E Clayton | .
by Keith Cowling | .
by Berkeley Hill | .
by N M Idaikkadar | .
by T L Dodsworth | .
by A A El-Sherbini | .
by | .
by Klaus-Heinrich Standke | .
by D J Bauer | .
by Thewalis, J | .
by Constantinescu, F | .
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