Abdulazeez N, Ogbanje JL, Zakari MS. Evaluation of Annual Effective Dose of Radon-222 Concentrations in Ground Water from Kotorkoshi and Its Rocky Environs, Zamfara State, Nigeria. Direct Res. J. Eng. Inform. Tech. 2025;13(1):38-43. Accessed May 31, 2026. https://journals.directresearchpublisher.org/index.php/drjeit/article/view/309