handayani, rizka. “A EFFECT OF FERMENTATION DURATION ON CAFEIN CURRENCY IN ROBUSTA COFFEE (Coffea Canephora) FROM PTPN XII JEMBER”. Indonesian Pharmacopeia Journal 1, no. 1 (August 13, 2024). Accessed November 21, 2024. https://journal.uds.ac.id/ipj/article/view/613.