S. A. Hasan, “The Role of Sound Pressure Level and Sound Types in achieving Comfortable acoustic environment for city centers (Al-Karrada as selective district in Baghdad city)”, NJES, vol. 18, no. 1, pp. Ar_1– 18, Jan. 2015, Accessed: Nov. 23, 2024. [Online]. Available: https://nahje.com/index.php/main/article/view/168