Ogbeibu’i, A. E., & Omoigberalc, M. . O. (2007). Envi ronmental Impact of Oil Exploration on the Crustacean Zooplankton of Osse River, Southern Nigeria. Biological Sciences - PJSIR, 50(4), 266–272. Retrieved from http://v2.pjsir.org/index.php/biological-sciences/article/view/994