OLOPADE, Muteeu; THOLLEY, Amara M.; DUNN, Derrick I. Measurement of Background Radiation Levels in Some Selected Automobile Mechanic Workshops in Freetown. Nigerian Journal of Physics, [S. l.], v. 34, n. 3, p. 12–17, 2025. DOI: 10.62292/10.62292/njp.v34i3.2025.414. Disponível em: https://njp.nipngr.org/index.php/njp/article/view/414. Acesso em: 28 sep. 2025.