Taapopi, Erastus E., A. Faanu, and S.B. Dampare. “Assessment of Background Radiation Fin Playgrounds of Selected Basic Schools in the GA East Municipal District, Accra, Ghana”. International Science and Technology Journal of Namibia (March 27, 2018): 133–147. Accessed March 29, 2024. https://journals.unam.edu.na/index.php/ISTJN/article/view/1222.