Ashraf Abd El-Hamled Khedr , <br/><br/>
To Evaluate The Efficiency Of Household Water Sand Filters Implemented In Upper Egypt /  
 تقييم كفاءة المرشحات المنزلية المعممة بجنوب الصعيد 
By Ashraf Abd El-Hamled Khedr; Supervised.Prof.Dr. Ibrahem Helal El-Hattab ,.Prof.Dr. Mohamed Reda Haggag , 
 - 120 Leaves :  illustrations ;   30 cm. +  
<br/><br/>Thesis (M.Sc.)-Cairo University,1995 
<br/><br/>Bibliography: pages 113 :120 
<br/><br/><label>Subjects--Index Terms: </label>To Evaluate The Efficiency Of Household Water Sand Filters Implemented In Upper Egypt