Theme 1- Land & Water Governance and Cooperation Technical Session: Transboundary Water Resource Management Management Practice of Transboundary Groundwater: The Nubian Sandstone Aquifer System By Ahmed R. Khater , Ph.D., Professor, Water Resources Management National Water Research Center (NWRC) Egypt, Land and Water Days in Near East & North Africa, 15-18 December 2013, Amman, Jordan