?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Ayanda%2C+Opeyemi+Isaac&rft.aufirst=Opeyemi+Isaac&rft.aulast=Ayanda&rft.title=Tropical+Zoology&rft.atitle=Acute+toxicity+of+glyphosate+and+paraquat+to+the+African+catfish+(Clarias+gariepinus%2C+Teugels+1986)+using+some+biochemical+indicators&rft.genre=article