Badr Eldin Ezzat Emam Higazzi <br/><br/>
Treatment of surface water by multilayer and multistage direct filtration systems /  
 معالجة المياة السطحية بواسطة نظم الترشيح المباشر متعدد الطبقات والمراحل 
Badr Eldin Ezzat Emam Higazzi ; Supervised Ezzat Abdelshafi , Zaher B. Abdalla , Mohamed Elabagy 
 - Cairo :   Badr Eldin Ezzat Emam Higazzi ,   1996 
 - 201 In various Leaves :   charts , facsimiles ;   20cm 
<br/><br/>Thesis(Ph.D.) - Cairo University - Faculty of Engineering - Department of Civil Engineering