Al-Jammaas, Oday H., Salih H. Sultan, & Waleed A. Mahmood. " Effect of Enzymatic Treatment on Viscosity and on Pectic Substances of Tomato Juice." Tikrit Journal for Agricultural Sciences مجلة تكريت للعلوم الزراعية [Online], 19.1 (2019): 84-92. Web. 14 Aug. 2021