Norah Basopo and Thamsanqa Ngabaza. The Effects of Chlorpyrifos and Lead on the Antioxidant Enzyme System of the Aquatic Snail Helisoma duryi. CACB-V1 [Internet]. 2021 Feb. 10 [cited 2026 Jun. 13];:74-8. Available from: https://stm.bookpi.org/CACB-V1/article/view/117