THÉOPHILE, M.; ALI, M. S.; PACIFIC, M.; JAIRUS, D. Evaluation of the quality of water, hygiene and sanitation in public elementary schools in the 7th Arrondissement of Ndjamena city Chad. International Journal of Social Sciences and Scientific Studies, [S. l.], v. 4, n. 5, p. 4288 - 4311, 2024. Disponível em: https://ijssass.com/index.php/ijssass/article/view/314. Acesso em: 21 nov. 2024.