محمد سالم على موسى و محمد بلعيد على 2018. Economic Analysis of Libyan Imports for the Most Important Vegetable Oils Using Almost Ideal Demand System During the Period (1990-2013). Journal of Pure & Applied Sciences . 17, 3 (Dec. 2018). DOI:https://doi.org/10.51984/jopas.v17i3.283.