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