"The role of technological progress in the development of strategic crops and develop For the period (1990-2011)" (2013) Al Kut Journal of Economics and Administrative Sciences, 5(12), ص 31–69. موجود في: http://kjeas.uowasit.edu.iq/index.php/kjeas/article/view/135 (تاريخ الوصول: 27 أكتوبر 2026).