Loría-Naranjo M. Protozoos and metazoos present in two wastewater treatment systems and their relationship with the Sludge Biotic Index. Rev. Biol. Trop. [Internet]. 2025Feb.4 [cited 2025Feb.21];73(1). Available from: https://revistas.ucr.ac.cr/index.php/rbt/article/view/59675