Marçal WS, Buture I de O, Carvalho MC de, Fortes MS, Silva R de A e. Levels of lead and cadmium in mineral supplements for cattle commercialized in Londrina. Semina: Ciênc. Agrár. [Internet]. 2004 May 30 [cited 2026 Jul. 26];25(4):359-64. Available from: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2256