Evaluation of radon, radium and gamma radiation at the environmental preservation area of Passaúna river, Brazil. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 9, n. 1A, 2021. DOI: 10.15392/bjrs.v9i1A.1525. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/1525.. Acesso em: 4 may. 2024.