Determination of Caffeine and some other Drugs in Cappuccino, Nescafe, Cacao, Coffee samples collected from some Libyan Markets using High Performance Liquid Chromatography (RP-HPLC). Journal of Pure & Applied Sciences , [S. l.], v. 20, n. 4, p. 149–155, 2021. DOI: 10.51984/jopas.v20i4.1739. Disponível em: https://sebhau.edu.ly/journal/jopas/article/view/1739. Acesso em: 20 jan. 2026.