Jafaar MR, Al-Ethary AM. Gravity Models Estimation for Saudi Arabia Kingdom Export to Iraq and From Iraq Export to Saudi Arabia Kingdom (My country has oil resources): (An Econometrics Study for period 1990-2020). JoE [Internet]. 2024Aug.16 [cited 2024Dec.22];3(4):2082-108. Available from: https://ecohumanism.co.uk/joe/ecohumanism/article/view/3742