Safi, Bashir ullah, Fazal Rahman Mukhlis Safi, and Abdul Rabi Atif. 2024. “The Role of Catalytic Vehicles in the Reduction of Environmental Pollution in Nangrahar City of Afghanistan”. NUIJB 3 (02):536-40. https://nuijb.nu.edu.af/index.php/nuijb/article/view/293.