HASAN , Ahmed Jasim; SHEBEEB, Hanaa Saad. Evaluating the Economic performance efficiency of the Alqaseem central concrete mixer for the period (2020-2024). Al-Ghary Journal of Economic and Administrative Sciences, Kufa, Najaf, IRAQ, v. 21, n. 3, p. 320–355, 2026. DOI: 10.36325/ghjec.v21i3.19518. Disponível em: https://journal.uokufa.edu.iq/index.php/ghjec/article/view/19518. Acesso em: 11 nov. 2026.