Toledo, Roberta dos Santos, Felippe Danyel Cardoso Martins, and Roberta Lemos Freire. “Waterborne Giardia and Cryptosporidium: Contamination of Human Drinking Water by Sewage and Cattle Feces”. Semina: Ciências Agrárias 38, no. 5 (October 3, 2017): 3395–3416. Accessed March 7, 2026. https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/26459.