Tente links no:Similares em:
UNWTO/OMT (2009), «From Davos to Copenhagen and beyond: Advancing Tourism’s response to climate change – unwto background paper». http://www.unwto.org/pdf/FromDavosto%20CopenhagenbeyondUNWTOPaperElectronicVersion.pdf. Acedido a 26/01/2010.