00450nam a2200097Ia 4500008004100000050002100041110004200062245009200104247011200196264004400308230508s2017 xx 000 0 und d aTC 805 I77i 20172 a3G E-learning LLC, USA,eauth and ed.10aIrrigation engineering and hydraulic structures /c3G E-learning LLC, USA, auth and ed. aIrrigation engineering and hydraulic structures _TC 805 I77i 2017_3G E-learning LLC, USA, auth and ed._2017 aNew York : b3G E-Learning LLC, c2017.