Poltoratska T, Maga I. Peculiarities of isolation of biologically active substances from St. John’s wort (Hypericum perforatum L.). PEB [Internet]. 2024 Sep. 7 [cited 2026 Jun. 13];(1-2). Available from: http://jrnl.kai.edu.ua/index.php/ecobiotech/article/view/18871