The Difficulties of Estimating Global Non-Market Damages from Climate Change (Joel Smith, Jeffrey Lazo and Brian Hurd, 2003) Economic Values of Freshwater in the United States (Kenneth Frederick, Tim Vandenberg and Jean Hanson, 1995) A Reevaluation of Price Elasticities for Irrigation Water (Richard Howitt, William Watson and Richard Adams, 1980)Developing Socoieconomic Scenario: For Use in Vulnerability and Adaptation Assessments - A UNDP- GEF Project (2001) Resource Type Document