جامعة عين شمس
" Environmental Studies on Industrial area Around Qalyubia, Inorganic and organic Pollutent ", A Thesis, Faculty of Scin. Zega. Univ. Banha Branch . 11 – Abdel Aal, S . H ., etal. (1988) : " Impact of liquid wastes of Industrial Complex At Helwan on Water Quality of Both Nile and Canal streams . " .