Castro Echavez FL, Marín-Leal JC. Ecotoxicological effect of heavy metals in free-living ciliate protozoa of Lake Maracaibo, Venezuela. jwld [Internet]. 2021 Dec. 30 [cited 2026 Oct. 19];51(51):102-16. Available from: https://wydawnictwo.pan.pl/index.php/jwld/article/view/4627