Apoyan, Svetlana H., Samvel M. Vardapetyan, Anahit M. Hovhannisyan, and Gohar F. Mkrtchyan. 2021. “QUANTITATIVE DETERMINATION OF TANNIN IN NETTLE BY SPECTROPHOTOMETRIC AND CHROMATOGRAPHIC METHODS”. Proceedings of the YSU B: Chemical and Biological Sciences 55 (1 (254):12-15. https://doi.org/10.46991/PYSU:B/2021.55.1.012.