Investigation of Antioxidant Compositions and Antioxidative Activities of Ethanol Extract of Alstonia boonei Stem Bark. NJPR [Internet]. 30 Eylül 2020 [a.yer 08 Temmuz 2026];16(1):71-80. Erişim adresi: https://www.ojshostng.com/index.php/njpharmaceuticalsciences/article/view/895