C. I. O, J. A. O, J. S. A. Investigation of Herbicides Presence in Surface Waters in Obubra Town, Cross River State, Nigeria. ijssei [Internet]. 2018 May 23 [cited 2024 Nov. 24];1(04):193 to 204. Available from: https://ijssei.in/index.php/ijssei/article/view/21