Ogueji, Okechukwu Emmanuel, Ibrahim Baba Usman, and Auta Jehu. 2013. “Investigation of Acute Toxicity of Chlorpyrifos-Ethyl on Clarias Gariepinus – (Burchell, 1822) Using Some Behavioural Indices”. International Journal of Basic and Applied Sciences 2 (2): 176-83. https://doi.org/10.14419/ijbas.v2i2.778.