“EFFECT OF ZRO2 , WO3 ADDITIVES ON CATALYTIC PERFORMANCE OF PT HY ZEOLITE COMPARED WITH PT Γ-AL2O3 FOR IRAQI NAPHTHA TRANSFORMATION”. Journal of Engineering 15, no. 04 (December 1, 2009): 4378–4392. Accessed May 18, 2024. https://joe.uobaghdad.edu.iq/index.php/main/article/view/3169.