Noise pollution at school environment: review study of China and South Africa casesChaimae El Yamlahi Chahdi, Bouazza El Wahbi, Youssef El Madhi, Hajar Darif, Hanan El Faylali and Abdelmajid SoulaymaniE3S Web Conf., 319 (2021) 02006DOI: https://doi.org/10.1051/e3sconf/202131902006