Mgbeje, Bob, Ezekiel Umoh, and Christine Emmanuel-Ikpeme. 2019. “Comparative Analysis of Phytochemical Composition of Four Selected Tropical Medicinal Plants Namely: Ocimum Gratissimum, Piper Guineense, Gongronema Latifolium and Vernonia Amygdalina”. Journal of Complementary and Alternative Medical Research 7 (3), 1-11. https://doi.org/10.9734/jocamr/2019/v7i330102.