Dr. Muhammad Umer, and Nadeem Ullah. “CIRCULAR ECONOMY APPROACHES FOR INTEGRATED WASTEWATER TREATMENT, WATER REUSE, AND RESOURCE RECOVERY IN PAKISTAN”. Spectrum of Engineering Sciences 4, no. 3 (March 31, 2026): 3743–3757. Accessed August 21, 2026. https://thesesjournal.com.medicalsciencereview.com/index.php/1/article/view/3386.