Elmanfe, G. et al. 2019. Determination of Nicotine in Libyan Smokers’ Urine Compared with that of Nonsmokers using Reversed Phase – High Performance Liquid Chromatog-raphy (RP-HPLC). Al-Mukhtar Journal of Sciences. 34, 3 (Sep. 2019), 172–180. DOI:https://doi.org/10.54172/mjsc.v34i3.323.