Corresponding Author
Saeed Nairizi
President Honoraire, International Commission on Irrigation and Drainage (ICID), TOOSSAB Consulting Engineers Co., Mashhad, Iran
Correspondence to: Dr Saeed Nairizi, President Hon, International Commission on Irrigation and Drainage (ICID), Head of the Board and Managing Director of TOOSSAB Consulting Engineers Co., P.O. Box 91775-1569, Mashhad, Iran. Tel.: +98-51-37684600, Fax: +98-51-37644326; E-mail:
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