BIOLOGICALLY ACTIVE SUBSTANCES OF THE MEDICINAL PLANT ECHINACEA PURPUREA (L.) MOENCH. Amer. Jour. of Inte. Rese. and Deve. [Internet]. 2022 Dec. 20 [cited 2025 Dec. 5];11:225-30. Available from: https://ajird.journalspark.org/index.php/ajird/article/view/430