Ibrahim, S.T. and Mahmoud, K.B. 2021. Maximizing profits in producing doors of all kinds in the Kurdistan Region, using the linear programming method (Al-Mustafa’s lab is an applied model). Academic Journal of Nawroz University. 10, 1 (Apr. 2021), 357–364. DOI:https://doi.org/10.25007/ajnu.v10n1a1117.