Integrated Fixed Film Activated Sludge Systems for upgrading Hydraulic Capacity and Settling Characteristics of Activated Sludge Processes. Tikrit j. eng. sci. [انترنت]. 31 مارس، 2011 [وثق 10 نوفمبر، 2026];18(1):28-41. موجود في: http://www.tj-es.com/ojs/index.php/tjes/article/view/491