DJEFLAT, Abdelkader. 2021. “Research and Development and Innovation: What Role for Design and Engineering in African Economic Development”. مجلة جامعة وهران 2 - Oran 2 University Journal 6 (01), 62-78. https://revue.univ-oran2.dz/revueoran2/index.php/revueoran2/article/view/92.