A.KA. Al-Btoush M. INVESTIGATION ON THE CAUSES AND EFFECTS OF VARIATION ORDERS IN THE CONSTRUCTION PROJECTS IN JORDAN. j. adv. sci. eng. technol. [Internet]. 2021 Oct. 15 [cited 2026 Sep. 28];4(1):65-73. Available from: https://www.jasetj.com/index.php/jaset/article/view/113