anad, abbas majeed, Monim H. Al-Jiboori, and Ahmed F. Hassoon. 2019. “Simulation Effect of Stability Classes on SO 2 Concentration in Daura Refinery and Neighboring Regions”. Al-Mustansiriyah Journal of Science 30 (3): 1-8. https://doi.org/10.23851/mjs.v30i3.611.