Almahdawi, Dr.Faleh H.M., Dr. Mohammed N. Husain Al Hasani, and Haider Salem Jasim. “Tragacanth Gum As Local Alternatives To Improve Viscosity And Filtration Control”. Journal of Petroleum Research and Studies 8, no. 4 (July 1, 2021): 1-15. Accessed May 25, 2022. https://jprs.gov.iq/index.php/jprs/article/view/259.