ISOLATION AND QUANTITATIVE ANALYSIS OF QUERCITRIN IN LEAVES OF SOME POLYSCIAS SPECIES COLLECTED IN VIETNAM. JMM-NIMM [Internet]. 2025 Dec. 26 [cited 2025 Dec. 30];30(6):pp. 413 - 419. Available from: https://tapchiduoclieu.vn/index.php/jomm/article/view/180