Fitria, F., Arifah, F. N., Lukis, P. A., & Sari, S. D. M. (2025). Flavonoid Levels in Beluntas Leaves (Pluchea indica (L.) Less) in Lamongan Regency Using a Spectrophotometer UV-Vis. Jurnal Ilmiah Sains, 25(1), 61–69. https://doi.org/10.35799/jis.v25i1.56217