Yunida, Yunida, Muhammad Kamaluddin, Theodorus Theodorus, and Sonlimar Simangunsong. 2022. “Determination Levels of Caffeine Isolated from Robusta Coffee Beans from Pagar Alam in Wistar Rat Blood”. Biomedika 15 (1), 8-15. https://doi.org/https://doi.org/10.31001/biomedika.v15i1.1251.