Utete, Beaven, and Nyasha Mabika. 2012. “[RETRACTED] Parasites from the Fish <em>Clarias gariepinus</em> As Potential Biondicators for Heavy Metal Pollution in Freshwater Systems”. UNED Research Journal 4 (2):165-73. https://doi.org/10.22458/urj.v4i2.4.