محمدعلي د.ندى خليفة, and عبدالوهاب اريج محي , translators. “A Documentary Study of Natural Resources and Ways of Protecting Them”. Journal of Planner and Development, no. 22, Feb. 2010, pp. 21-50, https://jpd.uobaghdad.edu.iq/index.php/jpd/article/view/165.