Saleem, Mhmood Khleel, Ammar Ahmed Hamdoon, and Khalid Ahmed Owaid. 2026. “The Effect of Adding Petroleum Resins C9 and C5 on the Properties of Qayyarah Asphalt”. NTU Journal of Pure Sciences 5 (1): 44-56. https://doi.org/10.56286/h64dhy69.