Jaeel, A. (2016). Investigation the Optimum Combined Dosages of Date Seeds Powder as Natural Coagulant with Chemical Coagulants in Domestic Wastewater Pretreatment. مجلة الهندسة, 22(6), 76-86. استرجع في من http://joe.uobaghdad.edu.iq/index.php/main/article/view/205