Norah Basopo, & Thamsanqa Ngabaza. (2021). The Effects of Chlorpyrifos and Lead on the Antioxidant Enzyme System of the Aquatic Snail Helisoma duryi. Current Advances in Chemistry and Biochemistry Vol. 1, 74–84. https://doi.org/10.9734/bpi/cacb/v1/7019D