QUANTITATIVE DETERMINATION OF TANNIN IN NETTLE BY SPECTROPHOTOMETRIC AND CHROMATOGRAPHIC METHODS. Proceedings of the YSU B: Chemical and Biological Sciences, [S. l.], v. 55, n. 1 (254), p. 12–15, 2021. DOI: 10.46991/PYSU:B/2021.55.1.012. Disponível em: https://journals.ysu.am/index.php/proceedings-chem-biol/article/view/vol55_no1_2021_pp012-015. Acesso em: 21 jan. 2026.