(2005). Evaluation of the World Bank - GEF EcoMarkets Project in Costa Rica. Online. Retrieved from: www2.gsu.edu/~wwwcec/docs/doc updates/NCSU_Blue_Ribbon_Panel_Final.pdfSills Erin, Hartshorn Garry, Ferraro Paul, Spergel Barry,2005.Evaluation of the World Bank-GEF Ecomarket Project in ...