IKPESU, Jasper Ejovwokoghene; OKEKE, Gerald, Ndubuisi; OVURU, B.S.; ALI, Peace; AMINU, Momodusani; ORODE, Mathias Eseoghene. Investigation of Heavy Metals in Zamzam Water. Direct Research Journal of Public Health and Environmental Technology, [S. l.], v. 9, n. 2, p. 168–175, 2024. Disponível em: https://journals.directresearchpublisher.org/index.php/drjphet/article/view/436. Acesso em: 11 sep. 2026.