فهرس المقالات Ecuadorian plants حرية الوصول المقاله صفحة الملخص نص كامل 1 - Preliminary phytochemical screening for antioxidant activity and content of phenols and flavonoids of 18 species of plants native to western Ecuador Shirley Moncayo Xavier Cornejo Jhon Castillo Viviana Valdez 10.30495/tpr.2021.1922658.1196
