thabit alhussainy, hassan, and R. Adnan AL-Hamdany. “The Contribution of Additive Manufacturing to Enhancing the Elements of Innovative Marketing an Field Study of A Sample of Engineering Offices in Some Provinces of Iraq”. TANMIYAT AL-RAFIDAIN, vol. 40, no. 132, Dec. 2021, pp. 304-20, doi:10.33899/tanra.2021.130423.1104.