THÉOPHILE, Maoudombaye; ALI, Mahamat Seid; PACIFIC, Mbaihoremem; JAIRUS, Dionkas. 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. 4, p. 4288–4311, 2025. Disponível em: https://www.ijssass.com/index.php/ijssass/article/view/314. Acesso em: 29 apr. 2026.