“OBTAINING OF ISOLATED CULTURE OF ST. JOHN’S WORT (HYPERICUMPERFORATUM L.) AND ITS MORPHOPHYSIOLOGICAL CHARACTERISTIC”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 36, no. 2 (198), July 2002, pp. 99-104, https://doi.org/10.46991/PYSUB.2002.36.2.099.