@article{ogueji_usman_jehu_2013, 
  title={Investigation of acute toxicity of chlorpyrifos-ethyl on Clarias gariepinus – (Burchell, 1822) using some behavioural indices}, 
  DOI={10.14419/ijbas.v2i2.778}, 
  publisher={Science Publishing Corporation}, 
  author={Ogueji and Usman and Jehu}, 
  year={2013}, 
  month={Mar}
  }