Petkova, N., Stefanov, K., Ognyanov, M., Mihaylova, D., & Vassilev, D. (2024). PHYTOCHEMICAL STUDY OF COMFREY (SYMPHYLUS OFFICINALE L.) ROOT EXTRACTS. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, 1, 295-299. https://doi.org/10.17770/etr2024vol1.7942