Determination of natural radionuclides in waste generated in the potable water treatment plants of the Zona da Mata of the state of Pernambuco- Brazil. Braz. J. Rad. Sci. [Internet]. 2019 Feb. 25 [cited 2024 May 19];7(2A (Suppl.). Available from: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/763