“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), pp. 1006–1009. Available at: https://www.tjnpr.org/index.php/home/article/view/567 (Accessed: 2 January 2026).