Analysis of Some Heavy Metals in Cow Skin (Ponmo) Sold at Major Markets in Ado-Odo/Ota LGA, Ogun State, Nigeria: doi.org/10.26538/tjnpr/v5i6.3. (2021). Tropical Journal of Natural Product Research , 5(6), 1006-1009. https://www.tjnpr.org/index.php/home/article/view/567