MEASUREMENT OF GAMMA RADIATION EMISSION FROM NATURALLY OCCURRING RADIOACTIVE SAMPLES OF USHONGO GEOLOGICAL ROCKS, NORTH CENTRAL NIGERIA. Nigerian Journal of Physics, [S. l.], v. 31, n. 2, p. 47–51, 2022. Disponível em: https://njp.nipngr.org/index.php/njp/article/view/58. Acesso em: 19 may. 2025.