Utete, Beaven, y Nyasha Mabika. 2012. «[RETRACTED] Parasites from the Fish <em>Clarias gariepinus</em&gt; 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.