O. Khalifa, H. وآخرون 2023. Spectrophotometric determination of Caffeine in Nescafe, Cacao, Cappuccino and Coffee samples collected from some Libyan Markets. مجلة العلوم الاساسية و التطبيقية. 15 (2023), 77–84. DOI:https://doi.org/10.36602/jsba.2023.15.85.