Abdelbaki H. 2013a. The Arab spring: do we need a new theory?. Modern Economy Journal. 4(3):187-196. Abdelbaki H. 2013b. The impact of Arab spring on stock market performance. British Journal of Economics, Management & Trade. 3(3): 169-185. Al Zubari, W, 2003. Groundwater management and protection in Bahrain. 10th Regional Meeting, Arab IHP National Committees. Sharm Al-Shaikh. September. Al Zubari, W, 2004. Management and sustainability of groundwater resources in Bahrain. Joint Kingdom of Bahrain-Japan Symposium. Bahrain. January. Berstrom, J.C., et al., unpublished report. Assessing the economic benefits of ground water for environmental policy decisions http://www.conservationfinance.org/guide/guide/images/18_berst.pdf. Doss, M and G., Milne, 2001. Water as an economic good: an approach to the Egyptian economy. Workshop on “Property rights structures and environmental resource management” . Egypt, March. Engle RF, Granger. 1987. Cointegration and error correction regression: estimation and testing. Econometrica. 55(2): 251-76. Gorlach G., and E. Interwies., 2003. Economic assessment of groundwater protection: a survey of the literature. European Commission, DG Environment, ENV.A.1/2002/0019. April. Johansen S, Juselius. 1990. Maximum likelihood estimation and inference on cointegration: with application to the demand for money. Oxford Bulletin of Economics and statistics. 52(2):169-210. National Centre for Groundwater research and Training (NCGRT), 2013. Economic value of groundwater in Australia. October. Thomas RL. 1997. Modern econometrics: an introduction. Essex: AddisonWesley. Longman Limited.