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). Al-Nahrain Journal for Engineering Sciences, [S. l.], v. 18, n. 1, p. Ar_1– 18, 2015. Disponível em: https://nahje.com/index.php/main/article/view/168.. Acesso em: 3 may. 2024.