Effect of Organic, Nitrogenous and Phosphorus Loads Variation onthe Removal Efficiency of Organic and Nutrients Pollutants In Duckweed Based Wastewater Stabilization Ponds Kossay K. Al-Ahmady; Zena A. AL-Shrefy Volume 23, Issue 1, February 2015, Page 12-22 10.33899/rengj.2015.101022 Show Article PDF 0 K