Al salhen, Khaled S., Omalsaad E. I. Omar, and Latefa A. Aljradmi. 2020. “A Biochemical Study of α-Amylase Activity in Saliva of Some Libyan Cigarette Smokers”. Al-Mukhtar Journal of Sciences 35 (3). Al Bayda, Libya:195-204. https://doi.org/10.54172/mjsc.v35i3.295.